Although diarrhea isn’t a recognized symptom of ovulation, it’s possible to experience bowel symptoms during ovulation, as hormonal changes can also impact our gut. Hormone-like substances called prostaglandins play a key role in ovulation. And some links have been made between prostaglandins and an upset stomach — though there’s more evidence for this happening during your period rather than at ovulation.Endometriosis can also impact your gut throughout your cycle as it might grow near your bowel. Pain when you poop is a possible symptom of endometriosis, so it’s always worth mentioning to your doctor.