Alright, let's start with some background info first and questions first. Firstly, my girlfriend doesn't get her period very often, maybe once every 3 months. The last time she had a period was 2 months ago, her ovulation cycle is wierd. Now no period = no egg = no pregnancy right? and secondly, I know that she'll have to go on birth control pills to help regulate her ovulation cycle again, but is this the same birth control that's used to prevent pregnancy? Now the reality, I'm an idiot. I just had unprotected sex with her today, and i'm a little worried that some of my precum(even though the tip of my penis was dry) may be able to get her pregnant. I didn't blow my load in her though. Should I be worrying?