Hormones Completely out of whack.

Ive got a serious blood loss problem.. I think it is hormonal but my doctor says its the position of my 4cm fibroid. I dont think it can be that anymore. My periods get longer and longer (14 days+), spotting has increased, and the birth control I just started taking seems to be working although im still spotting . Ive been this way for 3 years and have had two blood transfusions. Since my blood is rare my life is pretty miserable. Can someone help me. How do I get my hormones checked. What does it mean to see an endocrinologist? I dont have insurance. where can I find help in regulationg my hormones? I believe it has something to do with my pituatary. I have had brain injury and it could be attributed to that. Can someone shine a light for me?