Hi, I was with my girlfriend the other night and were just fooling around. I put my hand in my pants to rearrange my pants and I got some precum on my hand. I wiped it off and I may have gone to the bathroom and washed my hand before the following event but im not positive. I proceded to put my finger in her, after realizing what had happened later I told her. We are now contemplating using plan b and I would like to know if it is necessary. If it helps it had been a long time since I had ejaculated before the precum, and had urinated more than 3 times since then (which I hear makes the number of sperm lower). Thank you.