My boyfriend and I had a very messy New Years we were both very faded to the point of me not remembering a lot of things ( I know I shouldn't be doing that please don't judge) and we ended up having unprotected sex, he did pull out before he came but I'm still worried about precum. My period is five days late. I took a pregnancy test that came negative but I'm still worried. This isn't the first time I've been late though, I'm very skinny and an irregular person. But still, he was my first time and it worries me. We're both 15.