Im about 2 months late on my period, my boyfriend and I have had unprotected sex now my breats are hurting and I have some brown gooey like stuff coming out of my vagina.. what could this be?

Infections, STD, pregnancy, or a couple things, Have you done a home pregnancy test yet ?
You do it first thing in the morning. So you are trying to get pregnant, so why have you not done a pregnancy test yet.