High temperature and Nausea as a symptom?

[Pear21]

Please could you help me understand what is going on with my 3 year old.

Are sickness and high temperature a symptom of covid? Is it too late to test on day 13?

anyone had the same symptoms? When does it get better?

seems to be a lot of children with high temperatures (with or without sickness) at school- could these perhaps be children who have had covid previously and fought it off? Hence why the symptoms are so different to typical covid?

so far we’ve had -

Day 1 - had a high temperature but seemed otherwise fine
Day 3 - was sick once, very clingy
Day 5 - still high temperature - was sick once
Day 7 - tired but back to normal, no temperature, playing and running around
Day 8 - High temperature, extremely tired (only awake for 9 hours during the whole day)
Day 10 - fine, no temperature, but tired starts coughing at night
Day 11- struggling with breathing looks quite poorly, coughing but only at night - high temperature is back
Day 12 - absolutely fine in the daytime, running around, lots of chesty coughing but only at night, no temperature
day 13 - 1030 and is still asleep - no temperature

Could be but yes it's probably too late to test, or could be something else. If you haven't already I'd be calling the doctor for a temperature lasting that long.

It’s strange because the temperature wasn’t there the whole time. Perhaps four days then gone but came back again. Also thought they’d just say it’s a virus

I'd be taking mine to the GP if he had a fever lasting longer than three days, let alone two weeks. Is there any chance he's picked up a new infection rather than it being the same one all along?

High fever and nausea are definitely symptoms.