Hysterectomy\hyperthyroid?

I need a complete hysterectomy cause I have a 13.7cm fibriod and a enlarge uterus of 19.9 cm large. the pain is so bad that even with pain medication I cry and I been left in the hospital under pain meds. but no doctor wants to do the sugery cause they found hyperthyriods and my heart is beating to fast , so they put me on a heart medication called beta-blocker, now I need to know what to do cause my reg doctor hasn't given me any thing for my thyriods and he gave me a apportment for the 15th of the following month, and I really need this surgery done but itcould be life and death. What should I do please I need to know the pain is driving me crazy it makes me want to take it out my self any advise from some one out there thank you