It's more likely you have a digestive problem or something connected to seasonal allergies.
Sorry you aren't feeling well The thing is, right now no one knows for sure unless they take a test. You don't have the hallmark signs of cough and fever though. That makes it more unlikely that you have the corona virus. However, I'm looking forward to the antibody test that may shed some light on things further. We all don't follow the typical pattern. So, no one can say for sure until you've had your antibodies tested. But you are out of the woods in terms of your breathing? Do they suggest a nebulizer at home? Any rescue inhalers? Anything you can do?
heart burn is known for causing some chest pain at times. It has been mistaken for a heart attack. Does this sound like what is going on? https://www.medicalnewstoday.com/articles/325019 You did the right thing to get checked out as you don't want to ignore chest pain and tightness. Remember that shortness of breath involves oxygenation and the symptoms are not just chest tightness although that can be present.