Hi, my boyfriend and I had unprotected sex while on vacation in Mexico on Thursday morning, May 5th at 4am. He did not pull out, ejaculating inside of me. I went to the doctors there to get Plan B but they were unsure of what I was asking for. When I arrived back home I went to the 24 hour pharmacy and purchased Plan B there, which was exactly 71 hours after unprotected sex. ( my flight landed at 2 AM Sunday morning, after getting my luggage I went to the pharmacy) My period was to be expected on May 7, but as soon as I took Plan B and went home I started my period. I was supposed to get my period this day anyways but I'm not sure if I got it because I took Plan B or if it means I'm not pregnant, I really have no idea as this is the first time I have taken Plan B. I'm confused with what my body is doing and if it worked or didn't, I would just like some professional opinions. Thanks so much