Sorry you are having Osteo problems along with the cancer. I am unable to take anything that is hormone based also. My Mom and Grandma both have/had Osteo, so imagine I am a prime candidate also. I know that each time I have to take prednisone my chances of bone loss are greater. Keep that in mind also.
Prayers are with you for the Dr's to make the right decision to get rid of the cancer and give you relief from the bone pain.