Why did I start bleeding?

I got my period and then a few days later I engaged in sexual intercourse and then I started bleeding a few days after that.....

Ok umm I haven't had an cycle in two months and my cycles are regular like clockwork and I've been having unprotected sex wit...

I have been sexually active for 3 years. My boyfriend and I were fooling around the day after I believed my period officially...

Ok ... So every time me and my boyfriend start having sex... I start to bleed... It's not my period because I haven't had one...

For the past month,everytime I have sex I start bleeding 2 days after...what do you think this is?

My period started on the 23th of june and I haded sex with my boyfriend on july 3th and july 4th and I started bleeding on ju...

Ok I had unprotected sex on feb 26 and on mar 4 I started cramping and bleeding. It started off brown when I started then wen...

I'm am no longer a virgin, haven't been for a while, and all of a sudden lately I wont have any bleeding at all then when I h...

me and my boyfriend have sex and the passed cuple of months I get stomack pains after sex it will go away but in the middle o...

Well when I play with my self I get so into it I started to bleed when I start going hard and fast why is that. I dont unders...