I could be pregnant???!?

my boyfriend and I were fooling around for the first real time. I gave him head, then he wanted to try to like rub it up and down my slit without it going in, we didn't have or use a condom and I came, I'm just concerned.. I'm in between my fertile window and my period.. but I'm still really scared.. I'm not NOT ready for this. please no judgement that I'm not ready for kids but felt that I was ready for that.