my boyfriend and i had unprotected sex in the shower. We made sure he masturbated a day or two before and urinated several times so the left over semen would be cleared out. We did the pull out method and he took his penis out a minute before he climaxed. However his semen hit my lower stomach area and i used my hand to block it from dripping down. Then i wiped it off with one swish to the left side and got the shower head and washed my lower stomach area to the side. Then taking the hand that did not touch the sperm, I cleaned my vagina with the shower head. 3 days after my breasts began to swell and become sore and my nipples too. But my nipples never were sore from period symptoms. My period is in 4 weeks so why am I getting these symptoms? I had cramps for a few days and never had them since. Other than that, no other symptoms. What may be happening?