I have pretty much been on vicadin since May 2011 .there are days I dont take it and I am usually only taking 1 aday.But for the last month I would say seems Im having back and neck pain!!? odd since this is a pain pill.does anyone know if this happens after useing it 5 months also my chest seems heavy...I do have bad anxiety so I am wondering if im teansing up and stressing cause i am worried about addiction?