I am having severe pain from a pinched nerve in my back. Current medications are: Amlodipine 10 mg, losartan 100 mg, metoprolol 50 mg x2, sotalol 80 mg x2, spironolactone 25 mg, cretor 10 mg, Coumadin 5mg. Have a pace maker. Is hydromorphone safe for me? Thank you, Barbara Wood