Hi 3rdgen...I am glad the surgery went well. Don't be surprised about being down...I was in the hospital this year for over a week, and when I came home I was "not myself" either. It is very typical, and often can be a combination of the drugs you are taking and the trauma to your body. As a surgeon once told me, "surgery is just an assualt with a deadly weapon under a controlled environment"! Once you turn the recovery corner, you will be amazed how much better you will feel, both physically and mentally.
As to your new life, it too will improve...to use a tired old WT cliche, "keep your eyes on the prize".