today's doctor appt.

Went to my doctor today, again. I called Friday to see if he would call in a different perscription, because the Tramadol that I am taking now is not relieving my pain. He said he wanted me to make an appointment to see him again before he decided what kind of med's to give me. He perscribed a pain patch, Durgesic or Fentanyl. I dropped off the script. and am suppose to pick it up this afternoon. I looked up what this is used for and the side effects. Now I'm not so sure I want to use it. I really need the pain relief, but I don't want to die to get it. This thing sounds pretty lethal to me. Anyone have some experience with this? Let me know.