Boyfriend wine wear condom.

Simple as that. He refuses to wear a condom. I've gotten pregnant and lost him/her so I'm always worried about it happening again. I'm not ready for that, being 19 and all. Last time we talked about it he said "but you know I'm good at pulling out" .... So yeah. Any thoughts on how I should handle this situation? I love him and the sex we have but every time we do it I am overly stressed the whole time until my period because I have severe anxiety issues.