Any ideas ?? ... Tamoxifen drives me crazy

Wow the fun to come. I had my mastectomy yesterday. Was to have sentinel node biopsy too but surgeon later rild me this morning he had to take a few as were enlarged. Dont know if this suggests lymph involvement but i guesd if so it suggests chemo?  I have a already been told as hormone pos will need to go on hormone therapy. Started with an A is all i remember. Now everything i have heard so far says that pretty much all of them cause joint pain. I see here that exercise etc is helpful but as a paraplegic this could prove interesting !