Estrogen... Grrr....

I have had migraines since I was 11.  Many years of monthly migraines that landed on my cycle.  Finally, at age 39 convinced my OB to take my ovarys out!!!  That was done September 2008.  I had 4 months of freedom and in January they started again.  Blood work and an ultrasound showed that I have grown another ovary.  I had a lupron shot 4 weeks ago and am getting another one soon.  BUT... my labs show I dont have any estrogen anymore, and I am still getting these insane headaches.  I have worked so hard to "figure out" all the components that go into and cause migraines and for so many years a huge factory has been estrogen and today I find out that I dont have any estrogen and I have headaches.  Frustrating and starting over.