Although I am still positive, I went out for a walk, with mask, just to see how I felt, (day10). I wore a coat, and was very overdressed as there were t shirts and shorts being worn in the diy shop. I was a bit breathless but I see that counts as only a minor side effect.
I didn’t buy anything.
I managed not to sleep all day. I did a bit of pottering, scrubbed an old suitcase clean, and another washing load.