Painless throat discomfort. Please help.

Since last one month, I am feeling like something is present in my throat while swallowing the saliva. No pain while eating. I can eat all food items without any problem. When I am not eating or drinking anything for a while, i am having this feeling of something present. Most of the times i am feeling dryness in the throat. Its common feeling in the early morning. Its painless but kind of causing discomfort. I am also having some pain in the middle of back on left side. Some medical history In Oct 2020, took treatment for gas trouble. No heartburn but some mild discomfort around lower left chest often. Even now, it happens once in a while. Took ECG, LFT, all looks fine. In Feb 2021, got severe throat infection due to dust allergy while cleaning the house which was locked for 4 months. It was cured within 3 days. Did not have any other symptoms like fever cold cough etc. What could be the issue. Please help. Thanks