OH NO - Teeth?!?!

Well, I think we may be getting teeth [not me, I already have enough ;o)]. Aidan has been sooo fussy since last night when we noticed he had a low grade fever. He's having a hard time falling asleep, wants nothing to do with his pacifier, sucks on his fists constantly and is drooling like a faucet (we are all soaked!). He woke up in the middle of the night and wouldn't go back to sleep and he screams at me if I try to soothe him! I feel so bad for him and I hope this passes quickly. I am so grateful I didn't have work today since we didn't get much sleep last night. Could this be the "4-month wakeful period" that I hear so much about?