Is it possible

I had sex with my boyfriend on the 16 of this month and we didnt use prtection I was fertile but I didn't know. well im not sure if he came inside of me but when he got up saw that he had nutt at the tip of his pen*s could I be pregnant.

Yes there is a chance that you could be pregnant. You should go to the doctor and get a pregnancy test done. For the future and to avoid problems you should either use protection or get on birth control. Both would be really good but the other would be a backup incase you forgot to use one.