Hello dear, This could be indigestion, gastritis, early gastroenteritis, or increased bowel activity. If there is no severe pain, repeated vomiting, fever, blood in stool, or abdominal distension, it is reasonable to observe initially.
Next Steps
For today
Take ORS/water in small frequent amounts.
Eat light food; avoid oily/spicy food, alcohol and heavy meals.
Rest and avoid strenuous activity.
If there is significant acidity/burning, an antacid may help.
Health Tips
If the feeling becomes localized or severe abdominal pain, vomiting starts repeatedly, fever develops, kindly consult me for more detailed evaluation.