As someone who is experiencing these long-term symptoms for months, I can tell you that my pulse oximeter reports a blood oxygen of 97+ even when I am feeling i

As someone who is experiencing these long-term symptoms for months, I can tell you that my pulse oximeter reports a blood oxygen of 97+ even when I am feeling it is difficult to breathe. I feel a tightness in my chest when it happens, primarily below the upper sternum. I'm also producing thick phlegm, only in my throat (not in my head or chest). I have no cough or fever. When I first came down with the illness in March, I went to the emergency room but could not get a COVID test, because they were limited to people who had been in contact with someone from China. I had a chest x-ray, which showed that I did not have pneumonia. I had what doctors would call a "mild case" with fever, cough, fatigue, headaches, "red eyes", and diarrhea.