Welcome to HCM,
It seems that you might have acute Gastritis
or hyper acidity causing this problem.
There is also a chance of having gastric ulcer.
Go for sonography
of upper abdomen to rule out gastritis and gastric ulcer.
Avoid fried,chillies and junk food.
Take milk diet,buttermilk,curd,rice.
Mean while take Omeprazole
Quit alcohol or smoking
if you have habit.
Ok and bye.