so many choices on birth control!

Nikki
In need of some help! I am getting married in October and I need to get on birth control again because, I am scared I'll get pregnant and won't fit in my dress!!
I've been on birth control before, I've taken pills and I had the implant, which the implant sucked in my case. So I am wondering, what works for you guys?! Did you gain weight? Please tell me all of your side affects!