Joshua is officially teething.
I mentioned that he woke up screaming at night at playgroup and a lot of other mothers said that their children did that during teething, so I inspected his lower gums with my finger, and sure enough, there are two little bumps that make him squirm and squeal when I rub them.
I'm not sure how long he's actually been teething, or how long they take to break through, but he's been more chill than usual as long as they're not aching too much. He chomps down on anything in sight though. I was doing dishes while he was in his walker toy and I looked over to see him leaning over munching on the steering wheel. He sure is a cutie patootie.