I started taking vicodin and then Norco for the last two months because my dentist prescribed it to me for pain, since I had three root canals the last 2 months. Its been 8 days since I stopped cold turkey. And I am getting these withdrawal symptoms, lots of nauseau, the feeling of wanting to throw up,,, fatigue, tired, not being able to sleep, restless, no energy, no focus, anxiety, depression, crying spells, sad, shaking at times, coughing, sore throat, laryngitis.. How long will this last? I an tired of feeling this way.