Thinking about Birth Control

So recently I’ve been thinking about going on birth control, but I’m not entirely sure I need it. I am kinda sexually active (never had sexual but have done sexual stuff), and my period hurts like a bitch. I figured birth control could help in both areas.

Anyway, I will go on the pill, but what are the side effects? I heard you gain a ton of weight and that’s honestly the only factor i’m really questioning about it... i love the way i am now and i don’t want to gain any weight anytime soon!!! so any advice? is that even something that really happens? and please share your experiences with the pill.

thank you in advance, ladies!!