flushed cheeks

My 6 month old (today turns 6 months) had been have flushed cheeks since last night. I noticed it but i thought maybe just hot. Slept on it and it was gone this morning, but around 6ish i see it again and its a little worse than yesterday. No fever no ear pulling nothing! Cheeks feel a little warm. I think its teething but i dont want to be wrong.