Hmm, if you are a teen, this may be a teen thing, but I still won't forget the 2-3 year thing...I say go for it and tell a doc as soon as you can. Better be safer than sorry!
PC can only help for so long..so, the faster you get this addressed, the better. You don't have to talk to your parents necessarily (although, it's a GREAT idea), but just tell him/her, anything you say is not silly or embarassing to talk about!
There's nothing to lose, only gain!