SIIL Guides · Pregnancy

Pregnancy With an Ostomy: What to Expect Before, During, and After Delivery

If you have a stoma and you're pregnant, thinking about becoming pregnant, or just quietly wondering whether it's even possible — you're not alone. Most of the fear around this topic comes from not knowing what actually changes, and not seeing anyone talk about it openly. Here's what genuinely happens to your body, your stoma, and your routine at each stage.

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01 — Fertility

Can you get pregnant with a colostomy, ileostomy, or urostomy?

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Does an ostomy affect fertility?

No — an ostomy does not affect fertility on its own. Many ostomates conceive naturally and carry full-term, healthy pregnancies, and the stoma itself plays no role in whether you can become pregnant.

If your ostomy came from Crohn's, colitis, or cancer

If your ostomy was created because of Crohn's disease, ulcerative colitis, or another underlying condition, that condition — not the stoma — is what your medical team will monitor most closely, since disease activity can affect fertility and pregnancy risk. If you're planning a pregnancy, loop in both your stoma nurse and your gastroenterologist or urologist early, ideally before you start trying.

02 — Your stoma

How your stoma changes as your belly grows

Your abdomen changes shape dramatically over nine months, and your stoma changes along with it. This is normal, and it's the part that surprises people most.

What you'll notice

• The stoma itself may protrude more or less as the surrounding skin stretches and the abdominal wall shifts.
• Your usual flange size will likely stop fitting at some point, often around the second trimester.
• The stoma's position relative to your waistline moves as your bump rises, changing how a pouch sits under clothing.
• Skin around the stoma stretches, which can make the peristomal area more sensitive — extra gentle skin care matters more than usual.

Trimester by trimester

Why re-measuring matters

Your appliance fit is your best early-warning system — a flange that fit perfectly last month can quietly start leaking this month, and pregnant skin is more sensitive to output contact than usual.

03 — Comfort

Staying comfortable as your bump grows

The biggest everyday challenge is usually comfort, not medical risk. A few deliberate swaps make the difference.

Support that grows with you

• Switch to an adjustable, stretch-friendly ostomy belt rather than a fixed-size one — you need support that grows with you week to week, not one that digs in by month six.
• Move the belt lower or higher as needed to sit comfortably around the bump rather than across it.

What to wear

• Choose soft, high-waisted ostomy underwear with stretch panels instead of firm, structured styles that were comfortable pre-pregnancy but aren't anymore.

Daily routine adjustments

• Empty your pouch more frequently — pressure from a growing uterus on your bladder and bowel often means more frequent, and sometimes more urgent, output.

04 — Delivery

Vaginal delivery or C-section: which is safer with a stoma?

Can you deliver vaginally with a stoma?

This is the question most people are actually afraid to ask. Having an ostomy does not automatically mean you need a C-section — vaginal delivery is possible and common for ostomates, and the right choice depends on your specific anatomy, your surgical history, and your obstetric team's assessment, not on the stoma alone.

When a planned C-section makes sense

• A parastomal hernia or significant scar tissue near the birth canal
• A stoma created very close to the pelvic area where vaginal delivery could put unusual strain on it
• A history of complex pelvic surgery alongside the ostomy

Talk to your team early

Your obstetrician and your stoma or colorectal surgical team should coordinate directly well before your due date — this is not a conversation to have for the first time in the delivery room. Bring it up explicitly at your first prenatal appointment so it's on record early.

05 — Postpartum

What changes after delivery

Your stoma in the weeks after birth

Postpartum, your abdomen shrinks back over weeks, not overnight, and your stoma will keep shifting during that time too. Expect to re-measure your flange again in the weeks after birth — don't assume your pregnancy-size appliance, or your original pre-pregnancy size, is automatically right again. A soft, gentle support belt is genuinely useful here as your abdominal muscles recover, in the same way it was during pregnancy — snug, adjustable support rather than tight compression.

06 — Ask your team

Questions worth asking your care team

Pregnancy with an ostomy is not a medical footnote — it's a normal, well-documented path that thousands of ostomates have walked before you. The changes are real and worth planning for, but they are manageable, and you deserve a care team and a wardrobe that keeps up with you at every stage.

This article is for general information only and is not a substitute for advice from your own stoma care nurse, obstetrician, or doctor. Always consult your care team about your individual situation.