I had a c-section, so why does my vagina hurt when i have sex?

Many different cause: There many different causes of pain with intercourse or dyspareunia. It would be difficult to get a short answer without a physical examination. Therefore i would recommend following up with your gynecologist. Did this pain exist prior to childbirth? Are there any other associated symptoms such as urinary symptoms, vaginal discharge, itching or burning...? Is the pain with initial or deep penetra.