Best type of birth control? Please help

Jordan
I'm 16 and have been sexually active for 2 years now (with the same guy, my boyfriend ) and I was wondering what the best type of birth control would be for me. I'm currently taking loestrin bc pills and before that I was on the depo for a year and it made me have crazy mood swings and gain weight. I don't like the pill because its so hard to remember even when I set an alarm to remind me. Can anyone recommend anything that's easy on my body and is effective? Thanks.