What Causes Continuous Heavy Bleeding With Weight Gain And Facial Hair?

I am having the problem of irregular periods from 2012. That time I had it for 2 months continuously, then a doctor referred me to have a hormonal medicine for three months, which worked for that duration but afterwards my periods were back to square one. After that someone suggested me to go for ayurvedic, which didn t last long because of the aweful taste of it. After that I was on homeopathic medicine for 8 months, which was unable to treat my problem. Now, from past five months I am having a heavy bleeding continuously which only skips for one day and becomes continuous the day after. Due to all these problem, I have gained 25 kgs in 2 years and facial hair are also growing. My daily routine is not all about sitting and eating though. The most recent problem I am facing along with high bleeding is weakness. I cannot work or walk for more than 10 minutes without getting tired and sometimes I feel like I am going to faint, the world around me seems to be spinning. Please help me!