I am sorry you are suffering with A. I,s. There may be options. R. B. put some good links in one of the previous posts. I posted something about A. I's in the Diet and Nutrition section if you decide to go that route.
http://her2support.org/vbulletin/showthread.php?t=46664. There are foods that may or may not help
block estrogen if you decide to stop A. I's at some point.
I also posted something about defeating cancer through food in the Diet and Nutrition section
which is actually about anti angiogenesis (cutting off the blood supply to tumors) through food.
You may want to talk to your doctor about this. Maybe the two of you can discuss the pros and cons of A. I's and decide what to do in the long term.
I hope you feel better soon. Take good care of yourself.