If you have cysts on your ovaries you could have Poly Cystic Ovarian Syndrome (PCOS - there is a board here for that too thats full of a bunch of wonderful women
). This can prolong you not having a period as well..i've gone up to 2 years without a period. My hormones are severely out of wack too. Some doctors put you on birth control to jump start things, others use provera, and then there are other medications you can use to help you regulate your cycle and get pregnant. I'd really advise you to find a Dr. A gyn or obgyn that specializes in stuff like this.
Other symptoms of PCOS is
being overweight (around mid belly area usually),
excess hair (facial, stomach, breasts, etc),
out of wack hormones,
diebetes/blood sugar probs,
and im sure im missing more
I'm hoping you find out whats wrong, you'll be in my prayers.