Me and my boyfriend have sex regualry and the last time we did we had sex with no condom but he didn't let out inside of me.. I ussualy get my period at the end of the month and I haven't gotten it.. I took two home tests and they both showed up negative, my boyfriend said I haven't gotten it because I've been really stressed this month and my eating has been off.. im REALLY nervous.. am I just over thinking it or what..