teething and preemie question?

Ashley
My son is currently 3 months old but 1 month adjusted ( born at 31 weeks) 
Well he's been drooling a ton today , which he never does. Could that be teething already?!
He's been very cranky but I just figured it's because he was gassy until I saw him drooling today.
But could it still be teething even though he's 3 months (1 month adjusted)?