Hey, so about two weeks ago me and my boyfriend sort of had unprotected sex- I say sort of because he didn't ejaculate inside of me (I know this for sure). We are both very cautious about sex, and we are normally very careful, but it kinda just happened in the heat of the moment. I'm worried I may be pregant. There are a lot of things in my favor, though, like: 1) he went to the bathroom before we did it. 2) I wiped off the precum that was on him before he went inside me. 3) he was only inside me for a few seconds before he pulled out, fearing he was close to ejaculating. 4) about 12-13 hours afterwards, we bought a Plan B pill. 5) I am 5' 7'' and 114 pounds, and I have irregular periods. I'm also 17 years old. My period isn't due for another week or so (if it for once occurs exactly a month from my last one) and I know that Plan B can postpone a period. I'm a bit nervous because I've been experiencing a loss in appetite, which I know is an early symptom of pregancy. I am also not on any other form of birth control. I just want to know the likelihood of me getting pregnant with all of these factors in consideration. Thank you so much!