Is your surgery date soon?
I have 3 or 4 pairs of pants made from t-shirt knit fabric in a size 26. They were really soft and comfortable to wear on the way home from the hospital and during the few days after surgery before everything healed up well enough to get back into my jeans.
They are way too big for me now. If anyone is interested, please email me your address (click on my name and then click "send message" in the upper left corner) and I will send them to you. If you are superstitious at all, I have had no complications and haven't had any nausea/vomiting/food problems post op (so far. Knock on wood). Maybe these pants are a good luck charm, too!!!