I'm 17 years old and I'm on birth control. I had unprotected sex last night and it lasted quite a while. At the end I began to feel sensitive and raw so I had him stop. It was considerably rough sex. Now my vaginas sore an hurts to sit in certain positions. I have yellowish/clear discharge & I just recently noticed extremely minor spotting an I am supposed to start my period in two days. This was the longest and most varied in position/ rough sex I have had so I don't know what is and isn't normal