Hi I am 18, and my period isn't normal.  I got it last month on the 28th and around the 28th of September, I started getting darker and then bloody discharge so I assumed my period was coming because my breasts were being very sensitive, I waited and it never did.  Now the discharge is lighter and it is starting to go away and my breasts no longer hurt.  I have also been having lower back pains but no cramps.  I haven't had sex in over a year, but about two weeks ago my boyfriend went inside me but nothing happened, I don't know if this has effected anything.  Also I had a yeast infection and a urinary tract infection before that, but I don't know if that's what is causing this.  I don't know what I should do, please help!