most helpful answer there is really no way to determine the source of this blood unless you had an exam. it is not uncommon to have uterine bleeding (an early menses is not uncommon in any woman) but you could just as well have a small vaginal or introital tear from your recent sexual activity. whether the source is your hymenal ring or not would require an exam.
implantation bleeding or hymen broken? . it started a day after intercourse. my first sex was a few weeks ago and it didnt bleed. the day before the bleeding was my fourth time. im confused whether this could be implantation bleeding or just my hymen finally breaking? the bleeding is going on for four days now. it started with bright red blood then brown on the next day then red again on the next 2 days. no cramping at all. this is the fourth day im bleeding (moderately). not enough to be a period. im due in 7 days. what could this be?