every time I have sex even when protection is used I get highly paranoid. I recently done away with my boyfriend of four months and we had sex 3 times last month. 3 days before my period of last month. My period for last month was June 13- 18. We then had sex again a week after period and then once again a week later two times. I believe I was fertile on those days! Also all sexual acts involved a condom! No or any slippage breakage. Well my period for this month is due in 6 days and at the beginning of last week ive been having very tender breast, mild cramps, and back cramps. The Tender nipples is still going on now and occasionally breast soreness and it's annoying. Could this be period or pregnancy symptoms?? This is my first time ever experiencing sore breast like this before period. Is it pms or pregnant and Also how accurate at condoms preventing babies if it didn't break nor slip. When do symptoms start? Before or after period