I didn't have a problem with nausea from the surgery, but I was kept on Nexium for a couple of weeks. I do have to take Zofran if I have to have a med known to cause nausea.
If you are not having reflux symptoms your wrap is probably just right. I presume you can swallow just fine. The tech may have been impressed that you have pretty good swallowing muscles. Mine are really weak from polio.
My surgery was a year and a half ago. about
9 months into the new wrap I was given a new pain med for my fibromyalgia that made me throw up suddenly. I did get it stopped with paregoric, but too late. I vomited blood and knew right away I had ripped something. The stomach is sewn to the esophagus for my procedure (Toupet Fundoplication). On barium swallow and CT my wrap is floating around, part of the stomach is above the diaphragm. You can ask your doc if everything is in place.
For nausea my GI doc had me take Nexium. I seriously didn't believe it, but it did work! I do recommend trying it for at least a few days. I don't take it all the time, just when I'm going through a period of stomach upset. I'm sensitive to all sorts of stuff, finding out that I feel better off wheat and lactose. I already knew I was sensitive to anything with sulfites, which triggers my stomach to try to reflux.
Keep a food log. Get a small notebook and write down everything you eat or drink, meds, herbals, everything! Write down the times. Write down any reactions, particularly the first hour and 2 hours. (Sulfite's common effect is migraine after several hours, even up to 2 days. My stomach and heart react within 2 hours, more often a half hour, but only when the dose gets above about
2000 - 3000 micrograms.) If you do find culprit foods you can progress on to "challenge testing."