Me&my BF's first time

ally
So on April 7th my bf and I decided to do stuff. So I layed on him (both with no clothes) and so my area& his were touching (not in) and then got off I gave him a hj& he came& some was on my hand. I then checked to make sure noting was on/ in me from when I was laying on him. I had wiped off the stuff on my hand but didn't wash them (I'm an idiot I know) then the next day we had sex for the first time (both previously virgins) and it was great.& last night (April 13) I got on him& it went in with no condom cause we got carried away. When I got off I checked and he had precum on the tip. I'm just scared to have sex again cause I cannot be pregnant(I'm 18, he's 19) we would both be dead. What do y'all think??? Could I be pregnant???