One hot & red cheek in 3month old

[Hobby2014]

Any ideas?
One cheek is very hot & red whilst the other is his normal skin colour and cold.
I googled and came across slapped cheek but it's not common in babies, usually children 6+.
Any ideas?
Thanks

[Hobby2014]

Face cheeks, not bum cheeks.

[MistAndAWeepingRain]

My first thought was teething.

[LIZS]

ds had it at 8 months , he was quite poorly, lethargic, hot, unhappy. Could he/she be teething ?

[TommyandGina]

Sounds like teething to me, are the gums extra hard on that side?

[BikeRunSki]

Teething
Although you may not get any teeth for montgs yet, they are moving around in there.

[Hobby2014]

Thank you. I knew their cheeks went red when teething but thought both would. I've just felt his gums and they don't feel harder. But is still early days I guess.

[Hobby2014]

Sorry I didn't see the other post. Not lethargic or unhappy. Seems normal, other than being especially vocal today, but not crying, just chattering.