Vicodin and cold turkey

I have taken Vicodin for 12 years now after open heart surgery. My chest bone did not heal right and in 2002 had injuries to both my knees. My doctor took me off of the medication last week since all my heart medications that I take along with this is damaging my liver. I will tell all who is reading this that I have been taking 750mg 5 times a day for 12 years and I am having a tremendous amount of trouble coming off of this drug. I have not slept in days and all you can do is think about the drug. Diarrhea is a another problem with not taking it and major cold spells and sweating. Anyone that can avoid this I hope you do. Because of the damage to my liver I had no choice but to stop cold turkey, I hope and pray that these symptoms go away soon......