My period comes on Week 3 and ends by the beginning of the 4th week (placebo week). Is it still safe to have unprotected sex? I fear that the fact that my body still isn't synchronized with the pills yet means that I am not fully protected. I recently had unprotected sex with my boyfriend and although he didn't go all the way in, he did cum in the entrance of my vagina. He also fingered me after so sperm may have gone in. I didn't take Plan B or anything because I figured my birth control pills have already prevented my ovulation. Am I right?