So recently my boobs have been feeling really bruised. And the nipples a little sensitive. I haven't had my period since 8/7-8/14. However, before I got that period I had not gotten it for 2 months. I have not had sex but like every teenager done other stuff. I feel like I'm gaining a lot of weight but I don't know if I'm pregnant or if I have pcos. Do you think I could be pregnant?