Period Problems!! Help!!?

Okay so...I am 14 turning 15 and since I've first had my period it's been very irregular. First, I get it on way diffrent days then other months. Second, I get it TWO times a month. Thirdly, it sometimes skips a month altogether and when I do get it, it's over bearingly heavy. Lastly! It only lasts about 2-3 days. P.S. I got my period when I was 10.