Teething Baby?

What were some of the symptoms your baby had when they started teething?

My son is 16 weeks, one week away from being 4 months old. He is sleeping much more than usual and is extra fussy/upset when he’s awake during the day. He drools so much all of a sudden. His cheeks are flushed red, but no fever. He chews on his hands and fingers constantly. I’ve tried to take a look at his gums but he won’t let me. He gets pretty irritated when I try to feel them. I’m totally exhausted with his mood changes.

Does this sound like teething?