happens when there is vomiting accompanied by loose stools. You do not have loose stools.
It is most likely to be due to gastritis
of the ingested food.
Please take over the counter antacids like Digene or Gelusil. PPIs like pantaprazole and omeprazole
also help to a great extent but they are prescription drugs. You need to get them prescribed by a physician.
Take bland diet for a day or two. Drink plenty of fluids.
You shall be fine soon.