For sure you'll be able to get it under control. The problem is that your pain was being managed as a chronic condition, and as long as you kept a certain level of medication in your system, you were good to go.
The problem is that once we lose enough of that level, our pain goes from chronic, to accute, in other words, an emergency situation. This is the nature of pain and it happens to every one of us.
To add to your problems, you are on some very strong medications, and withdrawal complicated everything and made your pain even worse.
Every doctor knows once you lose control of pain, it will take more and stronger meds to get it 'back in its cage' as it were.
Some people even end up in the hospital on IV meds until the pain can be managed again.
Almost every pain patient does this at one time or another, the 'gee, I wonder if I really NEED these meds' thing,LOL, and if you look through some older posts here, you will see it almost always ends up the same way as yours did.
I think its great, hey, check and see where your pain is without the meds, but going off that fast and also causing withdrawal is not the way to do it.
try replacing one pill a day with ibuprofin, see if that makes a difference.
Although with your reaction, you may already have your answer, you do need these meds to function.
I'm sure other people will be along soon with more advice for you, in the meantime, I hope your pain is better and soon back under control.
Your Friend, Fabby