Hi i am experiencing chest and throat area discomfort. Discomfort would be almost continuous through out the day from past 6 days. Discomfort feeling would be like entire area filled with gas or sometimes burning and some time pain. I have used multiple gastric and acidity tablets like Esomac 40, Pantakind DSR, 40 etc along with Gaviscon and sucrafil o gel syrups. But still discomfort is just not going away. Met Pulmonologist a week back and he did X Ray which was normal. Met Cardiologist he did ECG, D dimer and Ferritin blood tests which were normal as well. My SPo2 almost daily would be 97-98. I am already covid recovered asymptomatic patient (Last August 2020). Also have taken Covishield vaccination on 11th May 2021. Pls advise what might be the reason I am worried very much