I found it took a good six weeks before I felt totally normal. It has been over 20 months and I have some hip pain -- I wonder if it is from the tightness in my tummy. I would do it over in a minute, however!
I am 18 days post op from an abdominoplasty and I still am not always upright. I had trouble getting a full, deep breath for the first three days. On day ten, I felt that I could stand up all of a sudden, but I am still a bit hunched...