Sharp pain while passing stool during the first days of the period can sometimes happen because of pelvic muscle tightening, inflammation, severe menstrual cramps, constipation, or pressure from the uterus during menstruation. In some women with PCOS, hormonal imbalance and irregular periods may increase cramping and pelvic discomfort, although pain during bowel movements can also be linked to conditions like endometriosis, constipation, or sensitivity around the pelvic area during periods. If the pain occurs only during menstruation and improves afterwards, it may be related to period-related pelvic spasms or pressure changes. Drinking enough water, eating fibre-rich foods, staying physically active, and avoiding constipation may help reduce strain during bowel movements. Warm compresses over the lower abdomen, light stretching, and proper sleep may also help ease menstrual discomfort naturally. Because the pain is sharp and recurrent, a doctor's evaluation may still be helpful to rule out conditions such as endometriosis or severe pelvic inflammation, especially if periods are very painful or irregular. Consult a doctor if the pain becomes severe, continues beyond periods, causes bleeding, fever, painful intercourse, or worsening bowel symptoms.