I have been having sex for years, I am 27 and get regular check ups, but recently when I had sex I felt pain during doggystyle, then I started bleeding. After we stopped and I returned home I still was bleeding a lot. It finally stopped after two days. Then I felt fine.... I didn't have sex again for about 2 months, but when I had sex again with someone else and in another position, I again felt pain and started bleeding. Again, I bleed for the rest of the day and then nothing, but this time a few more days past and I started bleeding all over again. What the heck is this, I am making an appointment, but I am really freaking out here.