Give yourself time. Crossing-over puts the old bod through the wringer, and I believe most of that is caused more from what drugs you are stopping, then suboxone. Work closely with your doctor, letting them know of any troubling symptoms. In order to best help you, he or she must stay informed.
I had fairly severe balance problems for a couple days, and some nausea. All that resolved quickly, and I felt much better in a couple days.