1 month post-op

I've been having an additional problem. I thought it was part of the oxy withdrawal, but it hasn't stopped. Every joint and muscle in my body aches. If I take some other pain med, it usually dulls the pain, but it makes me afraid of becoming dependent on pain medication. I also don't understand. My chief pain complaint should be my back, one month after surgery. And don't get me wrong: my back definitely hurts. But the overall body pain is more restrictive and worrisome. I don't know the cause.