On the basis of your sign and symptom you have gastritis problem.
As you have said you do exercise regularly and take water then you should attention to change your diet plan -
1- take less spicy and fatty food
2- take less in take of food .
3- avoid
sugar and it's byproduct.
If again these symptom come then take consultation from a doctor to make correct diagnosis and start right treatment.
Next Steps
Don't worry your will be well.
Health Tips
Please keep positive attitude to fight any disease and any problem of your life.