teething?

my daughter usually eats every 2 hours, today she only ate 3 times? she will be 5 months next week. she’s really fussy and i feel like she’s been sleeping all day? she’s having wet diapers so i don’t think she’s sick. could she be teething? everytime i give her something she puts it in her mouth!

- i let her suck on a cold carrot today and she loved it, and her teether toy she kept putting to the right side of her mouth!