I had my recent menstruation last July 17, 2015. Now, it is already August 21, 2015 and I am delayed for 4 days already. Last August 15, 2015, me and my boyfriend had an unprotected intercourse. He did not wear a condom and he was inside me for about less than 5 minutes. Yes, that short of time only. I am pretty sure that he did not c*m inside me because when he was about to c*m, he immediately pulled that thing out from my vagina and took him about five seconds or more to burst it on my tummy.