What are reasons that a 21 year old female would be on her period for going on 15 days now? And it is not easing up, it is getting heavier and clotting every morning. She is not sexually active, nor has she ever been. Thank you

Go to the doctor. That's the only way to know for sure if there' something wrong. If you can't afford a doctor, then go to a free clinic or planned parenthood.

How old is she?

21

She needs to see a doctor. This could be any number of things that we are not qualified to answer. She needs to have a physical exam done.