I think misery loves company. I have a surgery appointment to get a tumour removed from my tricep tomorrow morning lol. I am looking at roughly a 2 week lay off from training upper body as well.
I am dreading the time off but I am going to use the time to focus on my interests outside of the gym and use the time off as a sort of a vacation. The time off will be good for you. It will remind you how much you love weight training and you will be more focused then ever when you are able to get back into the gym.
During my time off I am going to focus on writing some articles for my website and the board, focus on my online training clients, volunteer etc.
Don't make the mistake of being a hermit after your surgery. Put the time away from the gym to good use!