 [ Symptoms ] chronic nausea and vomiting only after eating what can that be  for 2 3 months ive had chronic vomiting and nausea that only occur after eating when i eat i start feeling nauseous after only some of bites and the nausea keeps increasing as i eat more i dont always vomit but ive had two hyperemesis cases where i had to go to the er to get iv therapy and anti nausea medicine most dont even work these cases lasted for about 12 hours each when the nausea symptoms started to fade away i have also done blood urine and ct tests which didnt show anything [ Disease ] it could be a bad sinus infection this has happened to me the sore throat could be due to drainage or strep throat either way it sounds like you might need to get to a doctor to get tests and possibly some antibiotics