Son has been very lethargic with runny nose and a very slight cough but really nothing much respiratory-wise for last two days. He got home from school yesterday and had a sleep for two hours, thought it was just tiredness following school return. Did the same today. Appetite reasonably okay but didn't eat school break. Looks a bit wrecked and jaded I don't have any Covid tests in the house & can't get any until tomorrow. Can Covid present like this at the moment?