My surgery day was the 3rd as well and I was actually in the hospital for 2 extra nights due to nausea. Part of the problem could be WHAT you are eating. You should be on FULL liquids until about your 14th day after surgery, nothing with chunks, it could be irritating your stomach, it's still healing in there so smooth liquid is going to go thru easy and pass right to the intestines. Other food that has to be broken down will have to sit in the stomach and gastric juices might be irritating it.
At the hospital they were giving me broth and popsicles, none of it was staying down, once they moved me to a thicker cream of chicken Soup and yogurt things stayed down....so right now, I am kinda living on cream of chicken soup...strained and yogurt without fruit.
My Dr. gave me a great book showing what you should be eating when, if you like I can scan it and send it to you.
Good Luck!