J.S.
I agree with Debbie, although when my little guy got his first ear infections, he "wasn't" pulling at his ears! (I have "strange" children, I know! LOL)
Debbie also forgot to mention that when babies are teething, they very often have trouble sleeping, and your Collin is very definitely probably doing just that!
If you haven't already, it's time to get him some "teething" toys. And you might want to go ahead and take him in to his Pedi, just in case.
Good Luck! HTH!
~J.~