I had sex with my boyfriend on January 10th and it was a spur of the moment kind of thing. I lost my virginity to him. I had also finished my period the day before that. But now I see spotting and am just worried. He never came inside of me but I also know that precum can lead to pregnancy. I feel like I am cramping a lot and according to the app I use it says I would start ovulating in a couple days. I don't know if I should take the plan b pill to be on the safe side. I have never come across a problem like this before and now I am very worried. My friend thinks that stress will cause me to think I am pregnant. I don't know what to do or how to do it really. If anyone can help please do.