Condoms suck

So last night I went to a party and ended up leaving with my boyfriend. After smoking 2 blunts and a joint we dropped off his friend and had sex. after we were done he turned on the lights and he realize that the condom broke and his cum was coming out of me and he's making me take plan b today and I really don't wanna take that pill because of the side effects. I'm turning 17 in 3 months and so I know I have to take the pill because I don't wanna end up 16 and pregnant.