Why did your doctor just stop writing your script rather than tapering you? There are also some other prescriptions, non-narcotic, that can help, like Clonidine, which some people say really works well in easing the withdrawals.
Usually is feels like a bad flu. Nausea , muscle ache, diarrhea and etc.. How severe and how long is different for every person. It is always safer to have a doctor follow the patient through this process. Best of luck.
How many for how long? What dose where you on when you CT?