Last night I was fighting with low oxygen and I went to the urgent care immediately in the morning, my oximeter was on my finger all the time, it shows 93% right before I entered hospital, but it turned to 98% soon after I sat on their chair. I stayed there for 4 hours, and the number was steadily at 98%. Right before I entered my car with confusion, oximeter shows 94%. I was surprised and went back to them again, guess what, it turned to 98%.
Out of curiosity I tried multiple times and every time is worked. I asked the doctor if they put oxygen in the air and they denied, but I do feel much easier to breath in hospital.
Am I the only one who have seen this magic?