Pregnancy and breastfeeding

Last reviewed: July 2018

This information is for women who want to know about the impact of Crohn's DiseaseUlcerative Colitis and other forms of Inflammatory Bowel Disease (IBD) on pregnancy. It may also be useful for partners of women with Crohn's or Colitis.

The aim of this information is to answer some of the most commonly asked questions about pregnancy and Crohn's or Colitis. 

It covers topics including fertility, medications, treatments and tests during pregnancy, looking after your health and the health of your unborn baby and the impact of Crohn's Disease or Ulcerative Colitis and other forms of Inflammatory Bowel Disease (IBD) on pregnancy, birth and breastfeeding. There is also information at the end about how to get further support.

The good news is that, especially if your Crohn's or Colitis is under control, most women can expect to have a normal pregnancy and a healthy baby. Also, for most women, having a baby does not make their Crohn's or Colitis worse.

We also have information on Reproductive Health, which has more detail on contraception and fertility.

Download this information (PDF).

  • How might Crohn's or Colitis affect my fertility?

    Research suggests that in general men and women with Crohn's or Colitis who have not had surgery are just as fertile as those who do not have Crohn's or Colitis.

    Although in general if you have Crohn's or Colitis it’s likely that you can become pregnant and have children, having active Crohn’s Disease or having had an operation for Ulcerative Colitis may mean your fertility is reduced. Treatment is available to help people with fertility problems.

    Most of the drugs prescribed for IBD do not affect fertility, but there are a few exceptions, including sulphasalazine and methotrexate that should be avoided if you are trying to conceive a child. There is more information in the section How safe is my medication in pregnancy or if I am breastfeeding?

    For more details on fertility read our information on Reproductive Health.

  • How might Crohn's or Colitis affect my pregnancy?

    Most women with Crohn's or Colitis will have normal pregnancies and healthy babies. However some research has linked Crohn's and Colitis with an increased risk of early (preterm) birth, babies with a low birth weight and, more rarely, miscarriages. How active your disease is may play an important part in these risks.

    Reading about these risks might make you feel anxious, there’s more information about getting emotional support in the section How can I get more support? And the charity Tommy’s also provides information about having a safe and healthy pregnancy.

    During pregnancy, you will receive antenatal care that will include scans and checks to make sure you and your baby are as well as possible. Your IBD team and antenatal team should work together to make sure you receive the best care. You could ask your consultant or IBD specialist nurse to contact your antenatal team to explain more about your condition and treatment.

    My consultant was more receptive than I had expected about attempting pregnancy and managing my disease throughout my pregnancy. My IBD nurses were also invaluable support for questions and advice. 

    Diagnosed in 2015

  • Getting your disease under control

    If are planning on getting pregnant, speak to your IBD team as soon as possible, so they can help you to bring your disease under control first.

    Having inactive disease or being in remission, means periods of good health. Active disease means having flare-ups, or times when your symptoms are more troublesome.

    Research has shown that most women with Crohn's or Colitis who are in remission or have only mildly active disease at the time they become pregnant, are unlikely to have problems during their pregnancy and there may be less risks for their baby.

    If your Crohn's or Colitis is well controlled when you become pregnant, it is more likely to stay inactive during your pregnancy, and could mean an easier time for you and your baby.

    So, if your Crohn's or Colitis  symptoms do begin to get worse, consult your IBD team as soon as possible.

  • Should I keep taking my medication while I am pregnant?

    It is important to try to keep your Crohn's or Colitis under control during your pregnancy, and your IBD team are likely to advise you to keep taking your medication. This is particularly important if you have had a recent flare-up and are trying to bring your Crohn's or Colitis under control. The risk from most medication is lower than the risk of a flare-up.

    There are some Crohn's and Colitis  drugs that pregnant women should definitely avoid. More details on how the most common Crohn's and Colitis drugs might affect your pregnancy are given in the section How safe is my medication in pregnancy or if I am breastfeeding? You should not stop taking any of your medication unless your IBD team have advised you to.

    Some people with Crohn’s use nutritional therapy as part of their treatment. This is called exclusive enteral nutrition (a special liquid-only diet), which usually lasts for 2 to 8 weeks. It is safe to use enteral nutrition during pregnancy to treat a flare-up of disease or as a nutritional supplement. See our information on Food for more information.

  • What investigations or tests can I have during the pregnancy?

    You may need to have an investigation or test to check on your Crohn's or Colitis, especially if you have a flare-up. Make sure your doctor and IBD team know if you are, or may be, pregnant. They may delay some routine investigations until after you have had your baby.

    Ultrasound tests and, after the first trimester, MRI tests are safe to have while pregnant.

    You can also have gastroscopy (an examination of the oesophagus, stomach and duodenum using a slim tube inserted through the mouth), sigmoidoscopy and colonoscopy, if these examinations cannot be delayed. They are best done during the second trimester (months 4 to 6) rather than earlier or later. It’s also OK to be sedated during these tests. Your IBD team may talk to your obstetrician before going ahead with these investigations.

    Investigations that involve x-rays or other radiation should normally be avoided by pregnant women unless absolutely essential. This includes barium examinations, CT scans, radio-isotope and PET scans.

    For more details about these tests see our information on Tests and investigations.

  • What about surgery while I am pregnant?

    Surgery for Crohn's or Colitis can be carried out safely during pregnancy. If you need surgery urgently, it should not be delayed, but it is only likely to be advised if it would be riskier not to have the surgery.

  • How can I look after myself and the baby while I am pregnant?

    It will help to work with your IBD team to keep your disease under control, and with your antenatal team to monitor you and your baby’s health. There are also many things you can do to look after yourself and your baby – see the brief information below. The NHS website provides more detailed information on keeping well while you are pregnant.

    Eat a balanced and varied diet

    Make sure you are getting enough calories, vitamins and minerals to nourish you and your growing baby. Our information on Food covers healthy eating for anyone with Crohn’s or Colitis.

    Supplement your diet if needed

    You may need to supplement your diet, especially if you are underweight or have active disease. Talk to a dietitian or your IBD team for more information. Some of the supplements you may need to take include:

    • Folic acid (also known as vitamin B9) can help reduce the risk of birth defects such as spina bifida. Most women trying to get pregnant should take 400 micrograms (400mcg) daily, and once pregnant, continue this until at least the twelfth week of pregnancy. If you are on sulphasalazine, have Crohn’s in the small intestine, or have had surgery to remove part of your small intestine, you may need a higher dose of folic acid. Your doctor will prescribe the right dose for you.
    • Vitamin D. All adults, including pregnant and breastfeeding women, need 10 micrograms (10mcg) of vitamin D a day, and should consider taking a supplement containing this amount.
    • Iron. Iron deficiency is quite common in Crohn's and Colitis and you may need extra iron when you are pregnant. Your doctor will be able to recommend a suitable supplement.
    • Do not take vitamin A supplements, or any supplements containing retinol, as too much can harm your baby.

    Avoid or give up alcohol

    Drinking alcohol excessively while you are pregnant can seriously harm your baby’s development. NICE (the National Institute for Health and Care Excellence) also advises giving up alcohol for at least the first three months of a pregnancy as it may increase the risk of miscarriage.

    Give up smoking

    Smoking when you are pregnant harms the unborn baby. If you stop smoking you will reduce the risk of complications in pregnancy and birth. For more information on the impact of smoking on your own health, see our information on Smoking.

    The NHS website provides more information about how to stop smoking and where to get support.

    Exercise - and fatigue

    Keeping active and fit during pregnancy can help you to adapt to the changes happening to your body and help you cope during labour. Keep up your normal daily physical activity (sport, running, yoga, dancing, or even walking to the shops and back) for as long as you are able. Exercise is not dangerous for your baby, there is some evidence that active women are less likely to experience problems in later pregnancy and labour.

    Crohn's and Colitis can cause fatigue, as can being pregnant. There is some evidence that low to moderate intensity physical activity may reduce fatigue associated with Crohn's and Colitis. See our information on Fatigue for more information and other tips for managing tiredness.

    I found gentle walking helped during my pregnancy. I also did a pregnancy yoga class, which I really enjoyed as I found it relaxing. 

    Mother of one child, living with Crohn's

  • Will pregnancy make my Crohn's or Colitis worse?

    If you have mildly active or inactive Crohn's or Colitis when you become pregnant it is unlikely to worsen during pregnancy. If you become pregnant while your disease is active, it is more likely to remain active during your pregnancy.

    We need more research before we know the long term effects of pregnancy on Crohn's and Colitis are known. Some research suggests that pregnancy can have a positive effect on Crohn's or Colitis – some women have fewer relapses and are less likely to need surgery after they have had children, whereas others studies show no change.

    If you do have a flare-up in the early days after giving birth it can be hard to prioritise your own health, but it is vital to look after yourself as well. Tell your doctor or IBD team about any new symptoms or if your symptoms worsen. For more information about looking after yourself, see the section How can I get more support?

  • What will happen when I give birth?

    You can give birth at home, in a unit run by midwives (a midwifery unit or birth centre) or in hospital. Your options about where to have your baby will depend on your needs, risks and, to some extent, on where you live. For women with some medical conditions, including Crohn's or Colitis, it may be better to give birth in hospital, where specialists are available, in case you need treatment during labour. Work with your midwife, obstetrician and IBD team to plan what will be best for you and your baby.

    Your ante-natal team should discuss all the options for giving birth with you, so do talk to your IBD specialist and your obstetrician about your preferences and about any worries you have. Your midwife will be able to give you further support and can help you make a birth plan - a record of what you would like to happen during your labour and after the birth.

    Some women with Crohn's or Colitis may have a caesarean section, or C-section, which is an operation to deliver your baby through a cut made in your tummy and womb.

    Your doctors may advise a C- section if you have active perianal Crohn’s or an ileo-anal pouch. A C-section may reduce the risk of damage to the muscles of your anus and perineum, which might affect your continence. Having a C-Section will also depend on your preferences, and the health of you and your baby.

    I had vaginal births with both my children and I had no complications.

    Mother of two children, living with Crohn's

  • What about my stoma?

    Pregnancy and delivery in women with a stoma is considered safe.

    If you do have an ileostomy or colostomy, it might be helpful to tell your stoma nurse about your pregnancy at an early stage. Your nurse will be able to talk you through any changes to expect. For example, your stoma may change shape or become larger as your tummy expands. It will usually return to normal after the delivery.

    Occasionally as your womb enlarges it can temporarily block the stoma. A change of diet may help – your stoma nurse will be able to advise on this. You may also find there is an increase in output from your stoma during the later stages of pregnancy. This is likely to return to normal after the birth.

    Most women with a stoma will be able to have a vaginal birth, although sometimes a caesarean section is necessary.

  • I want to breastfeed. Are my medications likely to harm my baby?

    Exclusive breastfeeding (breast milk only) is recommended by the NHS and World Health Organisation for around the first 6 months of your baby’s life. Breastfeeding alongside introducing solids is best for babies from 6 months. Some research has suggested that breastfeeding may protect against early onset Crohn's or Colitis in the children of mothers with have Crohn's or Colitis.

    Whether you can breastfeed while on medication for Crohn's or Colitis will depend on which medicine you are taking, whether it passes through into breast milk, and what is known about the possible effects on your baby.

    Most of the medicines used to treat Crohn's or Colitis are probably safe to use when you are breastfeeding – although many of the drug companies advise caution. This may be because little is known about the medicine’s long term effects and because it is difficult to carry out trials with breastfeeding mothers.

    It may still be possible to breastfeed, so talk to your doctor and your IBD team about any likely problems from your medicines.

    For information about different medicines, see the section How safe is my medication in pregnancy or if I am breastfeeding? Our specific information on treatments has more detail on all these medicines.

    Breastfeeding is not always easy, especially if you are also living with Crohn's or Colitis. You can obtain support from your midwife, health visitor or find out about other local support via the National Breastfeeding Helpline. There are also some online forums dedicated to this issue.

  • What are the chances of my child having Crohn's or Colitis?

    Parents with Crohn's or Colitis are slightly more likely to have a child who develops Crohn's or Colitis. How likely seems to vary with the condition and is also higher in some groups of people than others.

    If one parent has Crohn’s, the risk of their child developing Crohn's or Colitis is generally thought to be between 5% and 10% – that is, for every 100 people with Crohn’s having a child, 5 to 10 of the children will develop Crohn's or Colitis.

    Estimates vary but research suggests that in general, if one parent has Colitis, the risk of their child developing Crohn's or Colitis is about 2%. That is, 2 out of 100 children born to couples where one parent has Colitis might be expected to develop Crohn's or Colitis at some point in their lives.

    If both parents have Crohn's or Colitis, the risk can rise to above 30% (3 out of 10 people). We still cannot predict exactly how Crohn's or Colitis is passed on. Even with genetic predisposition, other additional factors are needed to trigger the development of Crohn's or Colitis.

  • How can I get more support?

    Being pregnant and then having a newborn can be exhausting. At times it may be difficult to do everything you would like for your baby because you are also living with Crohn's or Colitis. Try to take care of yourself, as this will make it easier to take care of your baby as well!

    The skills that you have developed to cope with your illness can be good preparation for pregnancy and motherhood. Mums with Crohn's or Colitis very often have already developed ways to deal with tiredness and have learned how to be flexible.

    Some women feel more vulnerable and anxious while pregnant and after birth. Hormonal changes may play a part in this. The “baby blues” affects many new mothers who may feel low and tearful, usually in the first week after giving birth.

    Pregnancy and birth can trigger more serious depression in some women (postnatal depression). Your midwife, GP and health visitor should ask you about your mental health, which will give you the opportunity to talk about any concerns and to receive help if necessary.

    The best way to treat depression is to seek help from a healthcare professional, but there are steps you can take yourself to reduce your chances of developing depression and help you recover once you’ve been diagnosed. The NHS website provides more information and getting support from friends, family and other mums in the same situation can be helpful.

    If you have a partner they may also need support and many of these services are also open to them. They may also find our information on Supporting someone with Crohn's or Colitis: a guide for friends and family useful.

    Find out more about our information line, webchat, forum and local support in the section on Help and support from Crohn’s & Colitis UK.

  • How safe is my medication in pregnancy or if I am breastfeeding?

    Speak to your IBD team as soon as possible about your treatment during pregnancy and breastfeeding. We have provided some general information below, but it is important to get specific advice about your situation from your IBD team, before starting or stopping any drugs or treatment.

    Aminosalicylates (5-ASAs)

    • Sulphasalazine (Salazopyrin)
    • Mesalazine (Asacol, Ipocol, Mesren, Octasa, Pentasa, Salofalk)
    • Olsalazine (Dipentum)
    • Balsalazide (Colazide)

    Pregnancy: Generally considered to be safe during pregnancy. Sulphasalazine can reduce your ability to absorb folic acid, an important vitamin for the unborn baby. You will be advised to take higher levels of folic acid supplements.

    Breastfeeding: Some babies may have an allergic reaction to the drug in their mother’s breast milk that may cause diarrhoea. They should be carefully monitored, but this normally stops if their mother stops the drug or they switch to bottle feeding.

    Corticosteroids (steroids)

    • Prednisolone
    • Budesonide (Entocort)

    Pregnancy: Steroids can cross the placenta but they quickly convert to less active chemicals and can be used in pregnancy if needed.

    Breastfeeding: Generally considered safe - a small amount of the drug may pass to the baby, but studies have found no harmful effects.


    • Azathioprine (Imuran)
    • Mercaptopurine (6-MP) (Purinethol)

    Pregnancy: Most doctors recommend continuing azathioprine or mercaptopurine while pregnant as there may be a greater risk to the baby if you stop treatment and become unwell.

    Breastfeeding: Small amounts pass into breast milk, but recent research has not found any evidence of harm in the children of mothers who have breastfed while on these drugs.


    Pregnancy: You should not take methotrexate if you are:

    • The male partner of a woman trying to get pregnant
    • A woman trying to get pregnant
    • Pregnant

    Methotrexate can increase the risk of birth defects. Use contraception while being treated with methotrexate and avoid pregnancy for at least 3-6 months after stopping treatment.

    Breastfeeding: Avoid breastfeeding while taking methotrexate. It passes into breast milk and may affect the baby’s immune system and growth.

    Mycophenolate mofetil

    Pregnancy: This immunosuppressant may also cause miscarriages or birth defects if used during pregnancy. If you’re being treated with this drug and you want to get pregnant, you will usually be advised to stop taking it at least 6 weeks before conception. Men should use reliable contraception during treatment and for at least 90 days after they stop taking the drug.

    Breastfeeding: Not recommended.


    Pregnancy: Can be used if the benefits outweigh the risks.

    Breastfeeding: Not recommended.


    Pregnancy: There is currently little evidence about its safety for pregnant women with IBD. If you are taking tacrolimus, and you are pregnant, or thinking about becoming pregnant, talk to your IBD team about your treatment.

    Breastfeeding: Not recommended.


    • Infliximab (Remicade or biosimilars Inflectra, Flixabi, Remsima)
    • Adalimumab (Humira)

    Pregnancy: Researchers are still looking into the long term effects of using these medicines during pregnancy, but there is evidence that they are low risk during conception and for at least the first two trimesters (up to 6 months). Stopping these medicines during the second trimester reduces the unborn baby’s exposure to the medication, but your doctor may consider it advisable to continue the drug in the third trimester to keep your Crohn's or Colitis in remission. Manufacturers advise using adequate contraception while being treated with these drugs, and for 6 months after you stop treatment with infliximab, and for at least 5 months after stopping adalimumab. You can discuss contraception options with your doctor. Infliximab and adalimumab should only be used during pregnancy if clearly needed – you will be able to discuss this with your doctor. If you receive these medicines while you are pregnant, your baby may have a higher risk of getting an infection. Before your baby receives any vaccine, it is important to tell your baby’s doctors if you received either of these medicines while pregnant. Your baby should not be given live vaccinations such as BCG until the age of 6 months if you received infliximab, and 5 months if you received adalimumab. In a pregnancy study, there was no higher risk of birth defects when the mother had received adalimumab compared with mothers who did not receive the drug

    Breastfeeding: It is currently unknown whether infliximab passes into breast milk. Manufacturers state you should not breastfeed when being treated with infliximab, or for at least 6 months after your last treatment.

    Studies have shown very small amounts of adalimumab present in breast milk, but that the drug is destroyed in the digestive system. Manufacturers advise that it can be used during breastfeeding.


    Pregnancy: Not currently recommended, unless you and your IBD team have decided that the benefits of taking it strongly outweigh any risks to you and your baby. Use effective contraception while you’re having treatment, and keep using it for at least 5 months after your treatment has finished.

    Breastfeeding: It is not yet known whether vedolizumab passes into breast milk, or what effect this could have on your baby. Speak to your IBD team for more advice.


    • Metronidazole
    • Ciprofloxacin

    These antibiotics are sometimes used to treat infections linked to Crohn’s Disease or pouchitis following IPAA surgery.

    Pregnancy: Metronidazole is considered low risk during pregnancy. Doctors advise against using ciprofloxacin during pregnancy, particularly during the first trimester.

    Breastfeeding: It is better not to breastfeed whilst you are taking these antibiotics.


    • Colestyramine (Questran)

    This is a bile salt binding drug often used to treat diarrhoea associated with surgery for Crohn’s.

    Pregnancy: Considered safe to take during pregnancy.

    Breastfeeding: May be used if needed but seek medical advice first. 

    • Diphenoxylate (Lomotil)
    • Loperamide (Imodium, Arret)

    Pregnancy: It’s best to check with your IBD team before taking these when you are pregnant.

    Breastfeeding: May be used if needed but seek medical advice first.


    • Hyoscine butylbromide (Buscopan)

    Pregnancy: Avoid this over-the-counter medicine during pregnancy.

    Breastfeeding: Avoid if breastfeeding.


    Pregnancy: It is normally ok to take in pregnancy if there is no safer alternative.

    Breastfeeding: Speak to your IBD team about whether you can take this medication when breastfeeding.

  • Help and support from Crohn's & Colitis UK
    We offer information on many aspects of Crohn’s DiseaseUlcerative Colitis and other forms of Inflammatory Bowel Disease. You may be interested in our information on:

    Health professionals can order some publications in bulk by using our online ordering system. If you would like a printed copy of any of our information, please contact our helpline.

    Our helpline is a confidential service providing information and support to anyone affected by Crohn's or Colitis. Our team can:

    • Help you understand more about Crohn's or Colitis, diagnosis and treatment options
    • Provide information to help you to live well with your condition
    • Help you understand and access disability benefits
    • Be there to listen if you need someone to talk to
    • Help you to find support from others living with the condition

    Call us on 0300 222 5700


    Use our LiveChat 

    Crohn’s & Colitis UK forum

    This closed-group community on Facebook is for everyone affected by Crohn's or Colitis. You can share your experiences and receive support from others.

    Crohn’s & Colitis UK patient panels

    Patient panels, which are supported by Crohn’s & Colitis UK, are groups of people with Crohn's or Colitis who use their perspective as a patient to work with their IBD team to help improve their hospital services. For more information on patient panels, please contact our Patient Engagement Team.

    Crohn’s & Colitis UK Local Networks

    Our Local Networks of volunteers across the UK organise events and provide opportunities to get to know other people in an informal setting, as well as to get involved with educational, awareness-raising and fundraising activities. You may find just being with other people and realising that you are not alone can be reassuring. Families and relatives may also find it useful to meet other people with Crohn's or Colitis. All events are open to members of Crohn’s & Colitis UK

  • Other sources of information and support

    NHS Pregnancy and Baby Guide

    National Breastfeeding Helpline
    (including live chat support)
    Helpline: 0300 100 0212

    National Childbirth Trust
    Helpline: 0300 330 0700

    IA (Ileostomy and Internal Pouch Support Group)
    Helpline: 0800 018 4274

    Colostomy UK
    Helpline: 0800 328 42357

    Helpline: 0800 147 800


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Helpline service


We know it can be difficult to live with, or support someone living with these conditions. But you’re not alone. We provide up-to-date, evidence-based information and can support you to live well with Crohn’s or Colitis.

Our helpline team can provide information on a range of subjects including:

  • Managing Symptoms
  • Disability benefits
  • Medication
  • Diet
  • Test and diagnosis
  • Wellbeing
  • Employment
  • Help to find support from others living with the condition

Please contact us via telephone, email or LiveChat - 9am to 5pm, Monday to Friday (except English bank holidays).

If you need specific medical advice about your condition, your GP or IBD team will be best placed to help.