Hi. I'm 15 Years old. I'm over weight, I'm 230 pounds almost. I skipped my period for over a year. But I was still having discharge.(Ywllowish) Last month, I came on. My peiod. It was Very light. I was on for seven days, and then came off as was on again for about four days. And was off. Now this month, I came on from the Decemer 29th. very light to the 6th lightly. Ever since the 5th I've been on my period heavy. My mom, asked her doctor about it. She said here Im regular it's possible to be on longer then 7 days. Is this true?