I just wrote to someone with a similar question. See the forum topic "pain killer help." Withdrawal symptoms are unavoidable, but doctors who know about pain killer addictions have quite a few new medications to make detox much, much easier. The good news about withdrawal symptoms is, remembering them will be good motivation from ever going on narcotics again.
You are not alone, and you never have to [u]feel</u> alone again.
Try Narcotics Anonymous (
www.na.org). True, you might end up in a meeting surrounded by crazy people (this happens), but these crazies know exactly what you are going through because they've been there themselves. I am one of them, have been for nearly five years, and I have a great deal of happiness in my life today, a big difference from when I first started. I was totally suicidal. These terrible feelings of worthlessness do pass with time, so long as you don't act on them. Suicide is a permanent solution to a short-term problem, even though our problems at times can seem permanent. They're not. God doesn't make mistakes, you included. So don't act like you know better, even if you don't believe in God or you're mad at him.
The bad news is, you have to do some stuff for it to get better. You've started by reaching out for help. Good job for swallowing your pride! Some people let their pride kill them. Now's the time for the next step. Reach out to NA or if that seems like too much to take on right now, just take yourself to the emergency room or call 911 and tell them how you feel and what you want to do about it. They won't look at you like you have two heads, I promise. But do it now, not tomorrow.