Birth Control questiom

Hi my bf and I have recently started having sex. He took my virginity. We've been using condoms and im wanting to get on birth control. Does anyone have any suggestions of what the best kind of B.C. is that I should take? I've taken it before but not for sex it was to regulate my period, it made me gain alot of weight. I've heard about the different kinds like the pills and the patch but I'm really not sure what would be best preferably with no bad side effects. So if someone could please help me in this situation it would help me alot and I would greatly appreciate it.