Hi., I can understand your concern.
It can be due to Gastritis and constipation.
Both will get fine with proper medicine and diet.
Next Steps
for now take
tab pan 40 twice a day before food
tab gelusil 3 times a day after food
syp.sucrafil o 5ml twice a day before food
- for 5 days.
syp.gudlax plus 10ml at night for 5 days for constipation.
Health Tips
avoid oily spicy processed and outside food items
regular walking after every meals
drink adequate water
add fibre rich food Vegetables and fruits