Hi Bethb, you connected into a really old post.
You are only 10 days post op and on the 21 day post op diet, eat as much soup, liquid yogurt, fudgecicles, etc...as you feel you need to stay satsified. Do not count calories during this time, you are till healing and unlike the previous post indicated, do not go on soft or mushy foods, liquids only.
Cream of Cheddar/Potato soups are really feeling, try them..and good luck!