Hormone treatments, tamoxifen and tendonitis

Thanks so much for your comments. In response to your question, arpie,  I had surgery, chemo and radiotherapy last year from June up to Xmas and have been on Herceptin immunotherapy through this year till  late August. I'm feeling pretty good now, apart from the tendon problem.  I live in Canberra and am probably hooked in to support - Cancer Wellness Centre at Canberra Uni is helping me with Exercise Physio. My GP isn't too helpful unfortunately - very empathetic but not so useful I've found on this issue.  Anyway, I've decided to make a start on Tamoxifen and see how I go, given recurrence is more serious than even a very painful tendon! I'll just have to put up with the tendon till it eventually heals! 

Thanks for your responses and any more info that comes in is welcome!