Hi, I'm 29 years post OP. Sorry you are not feeling well. I've had several bouts of nausea and vomiting throughout the 29 years. More often then not it was ulcers but there are several things that can cause it from deficiencies to a stricture. My suggestion would be to make an appt with gastroenterologist and he will probably do an endoscopy. If you are having any other symptoms along with nausea I would also check in with your gp. Many vitamin deficiencies have several symptoms that seem unrelated. Good luck to you I hope you find an answer quick and you feel better soon.