Welcome to SR, Dallar!
We got support, lots of support here... Don't know much about painkillers. I'm an alcoholic too, and I've detoxed from that... the best I can suggest here is don't go back again after.
Detox is not fun, no telling exactly what you'll go through, every drug's different, everybody's different, and every time is too. But it gets much better afterwards, just remember that on Monday and Tuesday and Wednesday... you get the picture.
And come back to us! We're friendly.
TB