⛔️💊Ladies on the pill!!💊⛔️

I need to go onto he pill to stop my period, it is honestly excruciating and i cannot bare it anymore. However, I’ve heard multiple dodgy things about it. I’m 16, I am sexually active so it’ll also save me from becoming pregnant. Anyways... I don’t mind gaining weight because I’ll just start exercising more to get rid of it, easy to deal with. But is it true that you HAVE to take it at the EXACT SAME TIME EVERYDAY and that if you miss, you get sick etc. I have paranoia so anything i’m told, i worry about.. I just need help lol please 😬