I played with my boyfriend's penis and i got a bit precum on my hands.Five to ten minutes later (I don't remember exactly ) i went to the bathroom and i was touching my vaginal opening. I am  sure that my hands were dry and that i touched a lot of stuff before i went to the bathroom, but i still can't stop being afraid that I maybe got pregnant from literally a stupidity.Also i was post ovulating and my boyfriend has urinated a lot of times since his last ejaculation.I'm being extremely paranoid these days.I had my period 5 days after this happened.The first day it was normal I changed my pads three times and I had a lot of crampings,not a single pill helped me,but the next few days it was really little in amount and it stopped and showed up again after a few hours.Could it be implantation bleeding?? Am i pregnant?? Please help me.