Exemestane and Joint/Muscle/Tendon Pain

I took arimidex for four years, starting June 2011 and changed to anastrozole three years ago. I've been having Herceptin infusions for seven years - No.114 due this week. Physically things were ok until 2013, I.went to stand up one night and the pain in the soles of my feet was excruciating. I was able to continue working until late 2017 as there were good days and bad days, for the last two years the pain has been very bad most days and I use a walker. (I'd turned 70 so retirement was ok). I've tried about 10 different drugs including Celebrex, Lyrica, Endep, Targin, Palexia, and could fill the bath with supplements and oils. Tried acupuncture, massage sandals, Tens machine, epsom salts baths, hot and cold packs, Reiki etc -I have seen the pain Dr at my treatment hospital three times and when none of the drugs eased the pain he suggested their  two day Pain Management workshop, all very well done but for me the outcome was 'welcome to the new normal and make adjustments'. In summary nothing has made any difference! It has had an impact on my lifestyle. Early this year my GP gave me a prescription for a drug with codeine, I use this very sparingly for events I don't want to miss like a family birthday. As I also have aches and stiffness in various parts of my body, all unpredictable, I take 50mg of Voltaren just before I go to bed and during the day find Panadol Osteo takes the 'edge' off. I find Sketches are the best shoes and as my feet are small I can wear the largest child size and pay 50% less than adult size. I've done quite a bit of research on this although most of the evidence is anecdotal and I have not yet found anything that claims a reduction in pain attributed to aromatose inhibitors. This is a health condition that does need serious research.