Pregnant Again With Diastasis Recti: What Changes the Second Time

There's a specific, common fear that comes with a second pregnancy after diastasis recti: "will this make it so much worse." A recent study looked at exactly this question, tracking gap width across multiple pregnancies in the same women — and found something worth knowing before you assume the worst, or assume it doesn't matter at all.

The biggest jump isn't where you'd expect

The study, a retrospective analysis of 117 women, measured inter-rectus distance after each successive pregnancy in the same patients. The finding: the largest single increase in gap width happened between the first and second pregnancy — an average widening of 1.9cm, a 59% relative increase — and this was the primary turning point in 88% of the women studied. Later pregnancies (third, fourth) didn't show the same dramatic jump on average.

Worth being precise about this study's population: these were women who had gone on to seek abdominal wall reconstruction — meaning this cohort likely skews toward more significant, symptomatic separations, not a random sample of all postpartum mothers. But the pattern itself — that the first-to-second transition matters disproportionately — is a genuinely useful thing to know if that's the pregnancy you're in right now.

Why the first-to-second jump specifically

The mechanism makes sense once you think about the starting condition: a first pregnancy stretches previously undisturbed connective tissue for the first time. If that tissue didn't fully return to normal width before a second pregnancy begins, the second pregnancy is stretching tissue that's already loosened, not tissue starting from its original baseline — a meaningfully different mechanical situation than the first pregnancy was.

This is also exactly why closing your gap as much as possible before a next pregnancy, when that's an option, is worth taking seriously rather than treating as optional or cosmetic.

If you're already pregnant again: what actually helps now

If you're reading this already expecting your next baby, the "close it before you get pregnant again" window has passed — which is fine, here's what's actually useful instead:

Keep doing safe, pressure-aware core work through pregnancy. This isn't about preventing all widening — pregnancy will stretch your midline regardless — it's about maintaining deep-core coordination and strength so your body has a better foundation to rebuild from afterward, whatever the gap ends up being.

Avoid the same mistakes that worsen any diastasis recti — unmanaged intra-abdominal pressure from crunches, breath-holding under load, or straining — these principles don't change just because you're pregnant rather than postpartum.

Talk to your care provider about your history. A known pre-existing gap is worth mentioning at your prenatal appointments, particularly regarding activity guidance and monitoring as your pregnancy progresses.

After this baby arrives

The same fundamentals that work for a first postpartum recovery still work for a second — pressure management before loaded core work, consistent measurement, patience with the process. What's different is honesty about the starting point: if your pre-pregnancy gap was already wider going in, expecting a faster or easier recovery than your first time isn't a realistic baseline. A longer, still-genuinely-workable road is.