I’m 20 yrs old and had sex for the first time about a month ago. I did not bleed, possibly because i suffered an injury to my vagina when i fell down as a kid n hit the edge of the narrow curb i was walking on. The next time me and my boyfriend had sex was on the 5th day of my period(my periods last max 5 days, usually just 4), and i bled this time. Could it have been due to the sensitivity of the vaginal wall during periods? My vagina bled the next time we had sex too- which was 2 days later. There was very little blood, but i’m worried the penetration on the last day of my period could have left a wound. Please suggest what steps I should take.

It is certainly possible to break the hymen with blunt trauma as you describe. This may decrease or eliminate bleeding from sexual intercourse.

If the blood was dark or had clots, your bleeding could be due to menstrual blood. However, if the blood was bright red the blood could have come from some minor tissue damage during sexual intercourse.

Being that there was very little blood present, it is unlikely that your boyfriend had left a wound. Although your cervix may be more friable and sensitive during menstruation, the vaginal tissues are not normally affected by menstruation. If you are concerned about a wound, a self examination is warranted. If you are still bleeding or concerned, a visit to your gynecologist might be your best option.