Hi @55Jlz. Has your doctor told you which hormone inhibitor they want you to take? Broadly speaking if you are pre-menopausal it's usually Tamoxifen and if you are post-menopausal it's an AI (aromatase inhibitor). There are three, Anastrozole, Letrozole and Exemestane.
There is lots of info here on each of those. The best way to find it is to use the search bar with the name of your drug.
It's important to remember that we all react differently to the medications. Some people breeze through with little or few side effects. Cross your fingers and hope you fall into that group! No one gets all the side effects, some of which are incredibly rare, so try not to get frightened by the long list.
Here's the BCNA page on hormone therapy:
https://www.bcna.org.au/metastatic-breast-cancer/treatment/hormone-therapy/Let us know how you get on. I'm five days into taking Letrozole myself and have aching ankles and knees. Not sure yet whether it's the medication or something else! K xox