Effectiveness of condoms

Tan <3

Hi :)

My boyfriend and I of 2 years just recently began having sex. we used a condom and all was well. I am hesitant to go on birth control due to the hormones, (it just doesn't seem natural). I was wondering if it is safe to continue with just condoms? Does it lower the odds if he doesn't cum I'm the condom while inside me? Thank you for your time and support <3