Sorry that your mets are giving you grief at the moment.. It is so damn hard to just keep on moving when there is such a consistent and level of pain going on.. If you mind your Medical Team are not enough relief to be getting around comfortably.. Perhaps speak with your GP or BCN (if you have one) about referring you for specialised pain management assessment and treatment.. Getting that sorted out and reduced will make a huge difference..
I do understand also the issues with Tamoxifen and with Hormone + (I did them for 7 years) they usually place you on one of them as even though the cancer grows indepentendly of the horemones.. It eats them for breakfast and grows more quickly because of them.. So hence the tablets to murder our innocent little hormones!!!.. Post menopausal ones can be fun too.. I am currently on Femara..
I hope you get some relief soon and get to do some of those things that you love doing.. It is amazing when you get little wins just how great you can feel.
Also, if you are interested in the Advanced Group, I am a facilitator for it and would be happy to add you in.. Just let me know..
cheers, Sharon (aka Pink66)