abdominal binder:?
Dr. Randall wanted me to wear one too and I could never find one that would fit me comfortably so I went to the Avenue and purchased a body shaper (high waist panty) that helped support my incision and tummy. It really made a difference for me. The binder, for me, made me feel worse. Try both and see which one you like better. You can go to Marshall's and get the body shaper at around $12 vs. $24 at the Avenue.
As your body heals, you'll find that different muscles and nerves come alive again and cause slight pain or discomfort. It's normal but you still need to call him to make sure what is what. Good luck.