What Causes Excessive Hair Growth On Body And Inability To Gain Weight?

I am 30 yr old woman, a mother of three, with a serious issue. I have been experiencing a significant weight issue, not having the ability to keep on any weight. In the past year, I ve gone from a size 13 in pants to a 3, which is my current pant size. In addition to this, I have also begun to grow unwanted hair on my face and body (Hair is long and thick like a MAN). I have been prescribed many birth control pills to stabilize my hormone level, but nothing seems to work. PLEASE HELP ME! By the time the doctors figure something out, I ll have a full beard and a penis!!! - WHO AM I??, California