As you know, tummy tuck is a great procedure to get your contour back. We remove excess skin/fat and tighten the muscle. You would be very tight and would not be able to stand straight up for 7-10 days. During the initial 7-10 days, you should be sleeping in a lawn-chair position or sleeping on your side in a fetal position. Most people would have back pain due to the positioning. Talk with your plastic surgeon; he or she can give you a muscle relaxant. Also, talk to him/her whether he/she is okay with you sleeping on the side (in a fetal position). The first two weeks are the toughest after the tummy tuck. I will start feeling better very soon. Best wishes!