Slapped cheek

kiwi

So my nearly 6m old was sick a week ago which quick care told us it was an ear infection (he was miserable, fever, frequently spitting up) but wasn't pulling his ear or anything... So they gave us amox, and he finished it this Monday. Now this rash shows up, and now I think he didn't have an ear infection at all, but slapped cheek (fifth disease).

What do you guys think. He's acting normal now, it isn't bothering him. (he's also very sensitive skin, being he's a ginger lol)

Ps don't know why it's posting upside down... Lol