Dear @LoisLois
I can only echo what @Deanne has said. I’m in my 8th year of Femara and while I have had some side effects, I have had no bone or joint pain. Vaginal dryness yes, tried a pill change to no good effect and my breast surgeon very carefully walked me through medication that has helped a lot. I carefully monitor my bone density - it’s reduced but it was very good to begin with (and I am getting older!) so I have some wiggle room (good that you will get it checked). You can always change or even stop taking an AI, so worth giving it a try if your oncologist thinks it’s important. I know my oncologist wants me to go for ten years, but he too understands that trading for osteoporosis is not that attractive an option!
Congratulations on your new grandchild - these are important reminders of how precious life can be.