Teething?

Something's going on to make our little Jillian a very crabby-patty. For half the day today, she was in a foul mood, fussing and crying even though she was fed, cleaned and rested. We were thinking that maybe she had started teething ... so we cooled off some of her teething rings in case. Grannie took a look and thought she saw something coming in on the bottom. We'll just have to wait and see.