Hi, first time using this forum and I'm looking forward to asking lots of questions and helping others if I can

I'm having trouble trying to walk again after coming out of hospital 4 months ago and wondered if anybody could give me some help please?

Here's my story:

I collapsed in my bathroom in February and was knocked out for 8 hours with my legs in a bent position. This meant that when my flatmate found me and called the 999, I already had a severe case of Compartment Syndrome. The surgeons had to cut into both of my legs to relieve the pressure and stop the dead muscle poisoning my kidneys. They then put me in a cast and about a month later I was diagnosed with CRPS. My surgeon said I should be able to walk again (before he knew I had CRPS) and everybody else says it'll just take time. I'm sick of being in a wheelchair though and everytime I try to use crutches the pressure on my feet is unbearable and I cannot for the life of me get my balance. Would any of the medication I'm on affect this?

I'm on 600mg pregabalin, 40mg OxyContin and 30mg oxynorm per day. I don't understand why I'm still not on my feet