I am in the same situation as the original poster and on Aromasin 12.5mg (AI) every second day. I am feeling better each day as my estrogen goes down so far. Problem with AI is that people uses very high dose when it is not needed.
Read the studies of dosages and you will find out that you can get 90% of the effect with 25% of the prescribed drug, while minimising secondary effects. Key is to take as less as possible but as much as needed. Oh, and this should not be even mentioned but … do not take drugs while staying in your sofa! First and most side effect free method to improve your hormone profile is exercise!