Okay, so I wrote on here earlier but I have another question! My girlfriend and I were fooling around last week. I took my penis out of my pants and she rubbed up with her her panties, I don't know the material of them, on and with her genitilia area just for about two seconds.. Only one rub up and down. I don't believe I precum while she rubbed her panties on my penis but I may have precum in my polyster and nylon underwea before. Should I be worried about her being pregnant? Cause I have been stressing and really worries lately.