Ceasing hormone therapy

Hi Everyone. I am 43 and was diagnosed in October last year with Stage 1 ductal breast cancer in my left breast. I had a lumpectomy and sentinel node removal in November with clear margins and clear nodes. Completed a three week course  radiation  in January and started zoledex injections in December and exemestane tablets in January. Since late January I have had extreme pain in my right shoulder I’ve had an ultrasound, x-ray and a cortisone injection. My joint pain is quite significant and is really impacting on my lifestyle. I have pain in both shoulders, my hips and arms. I can’t get comfortable to sleep. I’ve been told that this all due to the hormone blocking therapy. I am seriously considering stopping therapy. I was pre-menopausal before commencing hormone blockers and feel that the impact of these side effects on my life outweighs  the potential of reducing the chance of the cancer returning. has anyone here experienced the same and stopped treatment? If so did your side effects subside? Any information would be gratefully appreciated.