Hi,
I'm glad that you got through your rehab time. Did you get checked out by a dr while you were there, as far as the physical problems you are having and the mental problems too? Early sobriety is often a roller-coaster because the problems that we were hiding from are still there and we can no longer numb them away. So, be patient with yourself and try to deal with one thing at a time.
I urge you to talk to your dr because you are feeling unwell physically and mentally.