Why do i bleed during sex?

May be normal: Depends on how much blood. Make sure you have enough lubrication, try using the jelly lubricant. Also may be worth getting checked by a doctor to make sure you don't have inflammation that could make the vaginal membrane fragile and easy to bruise. Pain, discharge, bad odor may be signs of trouble which need treatment.

I don't know.: Possible reasons for bleeding during or after sexual intercourse include: vaginal trauma, sexually transmitted disease, iud, cervical cancer, cervical polyp, combination oral contraceptives (cervical erosion), endometriosis, vaginitis, ; adenomyosis. Recommend gynecological evaluation.