worried about condoms???

i wanna have sex w my boyfriend and obviously we'd use protection because i'm only almost 17 and definitely am not trying to get pregnant. however, there's no way for me to use the pill and i'm really nervous that if we use a condom it could break. my mom raised me on her own (most likely because i was an accident - that's my theory anyways) until i was 9 so i'm just scared of the same thing happening to me. are condoms reliable enough? i know no form of birth control is 100% effective but i'm ready for this next step in our relationship i'm just scared about getting pregnant..