I've posted on here before but that was a while ago and I'm having some concerns again. About three weeks ago my boyfriend and I had unprotected sex. He didn't ejaculate in me and we both are 99% sure no sperm got anywhere near or inside me at any time (we're always super super careful). The very next day I started my period that afternoon (my periods are 5 days with the last day being super light/almost nonexistent). Could I be pregnant? According to my apps (Flo and Glow) I'm starting in 12-10 days and my boobs are super super sensitive right now and kind of sore. I've been having random spurts of nausea and I feel like ive gained weight, but that also could just be me overreacting and thinking they're symptoms when they really aren't. Any kind of help will be appreciated!!