I found I had the most side effects start about 1 month into taking Femara. It did effect my ability to do my normal activities because it caused a flare-up of my previously mild arthritis. But this gradually improved over the the next 2 months and now (at 4 month mark) I am back doing pretty much everything I was before.
I eat a very healthy diet, take fish oil, glucosamine and magnesium to help with the joint and muscle pain. I don't drink alcohol or caffeine (didn't before Femara either).
I am currently hiking a lot of hills (over 60 km a week) in training for a trek in Nepal in 10 weeks time. I do find yoga helpful and also found Pilates strengthening sessions have really helped to reduce any pain.
I am pretty sure I can live a happy, active lifestyle with the side effects now and my oncologist says that I will probably find some improvement continues over the next couple of months.
Good luck with it. Give it time. Deanne xxx