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Dr. Elizabeth Squirell · Gastroenterologist · Kingston Health Sciences Centre

Pregnancy and IBD

Most people with Crohn's or colitis can have a healthy pregnancy. Plan ahead, get into remission first, and keep taking safe medicines.

Key points

  • Talk to your IBD team before you try to get pregnant. The best time is when your IBD has been calm for at least 3 months. Start folic acid before you try, too.
  • Keep taking most IBD medicines, including biologics, through pregnancy and after birth. Do not stop on your own.
  • Some pills must stop 3 months before you try: methotrexate, JAK pills (tofacitinib, upadacitinib) and S1P pills (ozanimod, etrasimod). Your team will switch you to a safe medicine first.
  • Expect a stool test (calprotectin) and blood work about once each trimester, even when you feel well.
  • Most people with IBD can have a vaginal birth. A C-section is advised for active disease around the bottom, a past fistula into the vagina, or a J-pouch.
  • Breastfeeding is encouraged. Most IBD medicines are fine while breastfeeding. JAK and S1P pills are not.
  • If you took a biologic in pregnancy, tell your baby's doctor. Most vaccines, including rotavirus, can be given on time. Avoid BCG for the first 6 months.
  • Ask your obstetrician about low-dose aspirin, started at 12 to 16 weeks, to help prevent pre-eclampsia.
  • Get the flu shot, a COVID-19 vaccine and Tdap in pregnancy, and plan RSV protection for your baby. These are safe on IBD medicines.

Go to emergency or call 911 if you have

  • Heavy bleeding from your bottom, or you feel faint or dizzy
  • Severe belly pain that does not settle
  • A fever with belly pain
  • Vomiting, and you cannot keep fluids down
  • Bleeding from the vagina, or fluid leaking from the vagina
  • A painful, swollen leg, chest pain or sudden trouble breathing (signs of a blood clot)

Try “pregnancy”, “Mayo”, “calprotectin” or “VARSITY”.