Leslie, you are a real trooper to go back to work so soon after treatment. I was pretty much disabled for over a year post Tx. I would strongly recommend carpooling or finding alternate trasnportation while you are on long term narcotics. Fentanyl is 100X more potent than heroin.

As far as the emotional aspect, ask your oncologist for a referal to a psychiatrist. It takes a specialist and close monitoring to manage anti-depression drugs. That's what psychiatrists do.