I bought myself an oximeter on Amazon got it 2 days ago. My SATS at the docs have always been 97 98. but yesterday i checked it on a walk and it went down to 86. OK I was exerting myself but last night I checked it while I was watching TV and it was 88. Do you think this meter is unreliable or should I be concerned. I was diagnosed with Bronchiectasis about 18 months ago and had 2 stents but in my heart about the same time. I also was told that I had some fibrosis. I dont know what to think Help please
maxer