Could it be teething?

Kali

My almost 11 week old is CONSTANTLY putting his fists in his mouth and rubbing against his gums. He doesn’t do it to show hunger and isn’t really sucking on them. He’s also drooling a ton. I know teeth aren’t supposed to come in until around 6 months, but could it be starting already? He’ll be 3 months on the 29th of April.