Have you had an MRI of the brain? Before I was diagnosed with PCOS they suspected brain cancer, or pituitary adneomas, (sp?). I had a lot of the same symptoms, just get to an endocronologist or a neurologist... just do not ignore it. If you have HYPOglycemia... THINK before you take metformin.... I think you may want a different doctor to help you....
If you have a family history of fibroids, and you take metformin... you should again reconsider... metformin helps your hormones get in line which should increase estrogen, estrogen is a culprit in fibroids........
YOU NEED RESEARCH, lots of it and another doctor's opinion. Please do not take this lightly, if you live in the USA, you should know they love to just make a diagnosis, and usually do not care if it is exactly accurate.....
IT IS YOUR LIFE, YOUR HEALTH..... take control of it. Read I have spent probably 20 hours reading before each doctor appt. so I know exactly what I want to ask each visit... knowledge is empowering.
good luck
Just try and rest and keep your feet up. Does your doctor know your family history of Fibroids? You very well could have them or another type of cyst. My aunt had to go to the hoisptal because of her Fibroids. DO not let them brush you off as just having heavy periods. That happened to me so many times until I was finally told I have PCOS.