HI - I Have Lower Back Arthritis And Hernieated Disc

HI - I Have lower back arthritis and hernieated disc which affects my hip and knee. I take tramodol 25mg am and pm with Tylenol. my doc just prescribed prednisonmichaelm91257e for 3 days 3x3 the 3 days 1x3 , I am off that now. But he gave me an RX for Nortripyine fir nerve damage and arthritis, Took the Nor 10mg for a week then bumped to 20mg a d all I do is sleep. All day long since I went to 20mg. doc wants ne to increase for 4 weeks up to 40mg - but I can,t h ndle 20 mg