Hello, Thank you for your question. I will try my best to help you with your questions.
Since when you have this chest pain ?
Do you have any other medical issues ?
Are you taking some medicine ?
any previous issue ?
If this chest pain is increasing with activity, decreasing with rest, not relieved with gaviscon then it can be a heart pain or angina and needs ASAP visit to emergency department.
Let me know if you have questions ?