I'm 21 and I lost my virginity Friday night (4-5 days before my period was supposed to start). Afterwords, there wasn't hardly any blood at all, but then the next day, Sunday morning, (about 3-2 days before my usually regular periods are supposed to start) there was a lot of blood, just like a normal period for me. I don't know if this is something that went horribly wrong during sex or its just my period that started early and its nothing that I should be concerned with.
Periods can be late a few days then come with a little blood then go normal dont worry all is fine