Hello - dealing with a sick child. I know that there are other bugs out there so I’m trying to work out if it’s covid or not and how quickly I’ll be able to get them back to school. They have a temp, bad cough, sore throat, stomach ache, and are saying food tastes wrong etc etc. They’re young so I’ve done an LFT (nose swab only) and it’s negative. Symptoms started last night. How long after symptoms started did it take for you to test positive?