I had sex on monday without protection. My bf didnt go in all the way and and we stopped after 30 seconds (not that it matters) i took plan b 17 hours later. I was on my ovulation week but i cant be certain when I was ovulating because i have irregular cycles. My bf may have pre cummed but he hadn't cummed since Sunday and peed multiple times so i hope no sperm was in his pre cum but i am having major anxiety over this so please give me answers!