Is the cough associated with fever or breathing Difficulties?
Cough with chest pain seems like Acidity
Please make sure you are eating on time, less spicy food. Incorporate more curd into diet. Avoid Alcohol and smoking.
Please take Gaviscon syrup 5 ml post meal thrice a day for 5 days and review.
Next Steps
keep an eye on fever, cough getting worse, increased chest pain, any breathing Difficulties. Please contact your doctor if you feel so.