Birth Control?

This is probably a really dumb question, but I honestly don't know a whole lot about birth control. I'm 17 and not really sexually active. Would it make sense to talk to a doctor about being put on birth control just to be prepared? Also, I was reading about birth control on here one day and saw where it caused changes to some people's periods. So does birth control cause periods to stop (or not be as heavy) or does that just depend on the person and type of birth control they're on? Any help is appreciated lol thanks!! :)