My period is due today and I have not had it yet. My boobs don't hurt that much only if I press down really hard it does but they also feel a lot heavier and bigger? I have never had unprotected sex with my boyfriend. We play around but we never took off our clothes and had skin to skin contact. I'm not sure if my mind is playing tricks on me making me feel like my breasts got fuller but I know you can only get pregnant by actual penetration and his penis has never been inside of me. I remember fooling around during my fertile days but he never went inside me so I don't think pregnancy can be possible?