having sex with my boyfriend

So recently me and my boyfriend have been taking things to the next level . We have been together for a year and 3 months and we finally decided to have sex in October . We had sex like two weeks again and then we had sex like last night and we had unprotected sex every time . No condom no birth control no nothing . We had 4 rounds so I was wondering what should I do ? Everytime I say I want birth control he says no that I'm to young and that he doesn't want it to mess with my body and harmones . He doesn't like condoms because he says they are uncomfortable so what should I do ? I mean I love him a lot but I just don't want a baby