He's been spitting up more, drooling a whole lot more, and very cranky. Poor little guy. I've been giving him a soother that has been in the freezer, which seems to calm him down.
The worst part is how clingy he's become. If I so much as try to put him in his crib to sleep during the day, he will raise a little stink. So, I have had to wear him in the sling for half an hour or so, until he is fully asleep, and I can't sit down, I have to be bouncing or rocking him (but at least I'll have rocking abs and legs to show for it). So, it's been a rough few days.
I really hope this doesn't last too long... for me, and especially for him.