I am having bad anxiety and need someone to explain some things to me. A couple of nights ago, my boyfriend and I were fooling around. It started out with me giving him an HJ. I did not make him finish, as he did that himself.. But as he was finishing, I rubbed myself down there (I may have wiped my hands before, but I don't remember.) I only rubbed my clitoris and mostly the outside of my panties. Could precum somehow have gotten inside of me, and is there a risk? He also grinded my panties with his penis before he had finished, could precum maybe have gotten through my panties and done anything? He ejaculated onto my chest, and then i wiped it off with his boxers. We sat there for a few minutes, then I got up to get changed. Without thinking too much about it, When i was taking off my panties I used them to wipe my wetness dry down there. Could I have somehow gotten sperm on my hands and they got into me when I wiped myself with my panties? I got really anxious about what had happened so the next day I took some Plan B. ( I also weigh about 170 pounds. I am afraid of the weight factor for Plan B) How at risk for pregnancy may I be? I had my period on March 18 or 19, and fooled around on March 25th. I wont be getting my period for another 20 days and I need someone to tell me. I am also not on birth control. I feel like it is a VERY small risk, but I am stressing out and need my mind to be at rest.