As described it looks like a hyperacidity
and thats why an ongoing pain in the chest and difficulty breathing
A person who has such bad acidity and using drugs for the same should not be eating fries and beef as it will cause more acid.
What you can do is try tablet pantoprazole
40 mg daily for 14 days and antacid
syrup 2tsf 3 times daily 1 hour before eating.
Also get an ECG done to rule out any cardiac problem