I'm having trouble sometimes with taking deep breaths. It's easier when I yawn, but other times it's really tough. My pulmonary function test came back normal, and my oxygen levels are good too. But I've also noticed that whenever I eat, there's this smell and sound from my mouth, reminding me of acidity or gastric issues. Could these be related, and what should I do about it?

Probable diagnosis is GERD .Patient is advised tab pan d ,orally for 14 days and syrup sucralfate 10 ml thrice daily for 7 days .