I didn't have a period for 6 months last year then in September after a workout I noticed bleeding and ot went on for 2 weeks. Every month after, I was getting a normal period except I would bleed a couple day before and after. Then in February I had a period then 2 weeks after I started bleeding and since the then bleeding hasn't stopped. There was some days where it was just spotting but then it would get heavy. I was prescribed Provera but since I started taking it the bleeding has gotten heavier with hugs blood clots size of a egg. Every single time I stand up I can feel the blood cots come out. What can be wrong? Is it something serious? I have a gyn appointment in 2 weeks.

I Would try to move up that appointment to ASAP. It sounds like you're bleeding a lot and that isn't safe for you. It is hard to say what could be wrong, if anything, without examining you. Which is what your doctor would do. I can't even speculate here.

Yes this serious I have also this problems and please take a appointment with a doctor as soon as possible.