Ask a doctor before using a super tampon? You've *got* to be kidding me! Considering how heavy my flow was when I was a teenager, I probably could have used some hormone therapy, but I just used the super or super plus tampons and dealt with it. I was a happy camper when the pad manufacturers came up with the "wings" concept. Long time coming.
Anyway, I don't think getting a doctor's clearance to use a super tampon is at all necessary. It's the chronically heavy flow and cramps that need to be treated. I never would have made it through high school without super tampons. Getting a doctor's OK first sounds like overkill to me.