I have had my period 3 times inthe past 7 weeks and i'm bleeding with many blood clots. what could be causing this?

Multiple cause: Frequent periods can be problematic multiple causes really need to see your gynecologist.

Irregular periods: You need to see a gynecologist (g). Your bleeding may come from many things. A hormonal problem, or perhaps bleeding fibroids, among others. See a g, or go to an emergency room if you are weak, as soon as you can for an answer to your problem.