Birth control

Okay so My doctor up at my school has been getting on my butt about birth control. She said to ask my friends about it but I don't currently have close friends that are on the pill because they aren't with anyone right now. So I figured I'd try eve! I'm honestly so clueless when it comes to birth control and I'm also not a big fan of pills to begin with but I've heard so many things, like you can become moody, get brown spots, get cancer from taking birth control. I also don't get my period every month, most likely because of an iron deficiency, but I don't exactly hate not getting it every month. And I know if I go on birth control it will regulate it. I'm honestly just really worried about negative aspects it could do to my body and there's SO many different types of birth control pills it's insanely overwhelming! If anyone has any advice about birth control it would be appreciated and definitely better than nothing. Thanks!