I wouldn’t ask on here. Listen to your gut. Last time I asked on here I was told I should keep my daughter home for a cold/cough unless she had a fever. When I took her in it turned out she had rsv and bronchiolitis. That’s not the case for everyone, but better safe than sorry.

My son’s doctor said 3 weeks. (Unless they have other concerning symptoms).

And it also took my son about a week to get over a cough after getting rid of the flu but the way I found out it was a flu is after the second or third day when I started hearing the congestion

2nd maybe 3rd day, unless congested and or fever.