Definitely get a small pillow and take it to the hospital with you. The travel size works well. If you can press it into your abdomen when you move, cough, etc., it seems to "brace" the area and keep the pain to a minimum. One of my nurses gave me one and it made a huge difference!
You'll heal quicker than you might think, but the first days can drag on. The worst of it for me was right before my bowels went back to work. The pain at that time was terrible. I have had two resections now--same area as yours. Be prepared for an icky scar, but that too will subside over time. Good luck!!