@MillStone what day are you on?
I was interested you said about heart palpitations, I know a few others have mentioned heart too.
I said it to the GP yesterday but with the assumption that I must be confused because my lungs are near my heart.
Just read this interesting article this morning which goes through most of the symptoms we've described on these threads at some point
www.sciencemag.org/news/2020/04/how-does-coronavirus-kill-clinicians-trace-ferocious-rampage-through-body-brain-toes#
Warning- reading could make you freak out more. But the interesting takeaway for me was the bit about Coronavirus may make tiny blood clots, which is why heart disease patients (and type 2 diabetes) fare the worst.
For me it explains low oxygen levels when you're not gasping for breath.
Frightened myself last night as felt very light headed and woozy but could breathe fine. Took oxygen reading and was 86 - and pulse bpm was 150 and the thing was flashing.
Didn't know what to do so did yoga child pose, measured oxygen again and was low 90s, ending in 96. Went to bed and this morning was back to 98.
Not sure whether to call GP or not? Can they test for blood clots?
I do feel like the virus is on my heart at the moment.