Well done for sticking with it for 7 years already @NatF! Awesome! The side effects of all of them can be a pain, but some women have less SEs on one AI to another. Have you had any 'breaks' from it at all? Like having a month or two off, now & then? Quite a few of us have done that too. The longer you are on it, the better xx
I've tried Letrozole and Exemestane & have found Arimidex/Anastrozole to be the best for me - so far ..... if it goes belly up, my only other option is Tamoxifen!
I hope it settles. Take care xx