Great to see that your spirits are better.

It's probably hard enough dealing with becoming one-armed without having to cope with being depressed as well. I'd suggest finding some good reading - I had both knees scoped at the same time about 15 years ago and for the first few days in the temp casts I was like the rusty Tin Man wobbling around with friends and family my only hope to move around, thank goodness it was only a few days like that. My stomach doesn't do well with percocet or the strong pain killers - so I've tended to keep to Ibuprofen or Aleve during the day taking the stronger stuff before trying to sleep. It was also easier to concentrate and read during the day, seemed easier to nap while reading also. Hang in there.