Claire seems to be teething.  :-( She has been extra fussy and irritable the past couple of days. While she doesn't seem to be drooling more than usual (but then again, she's been a drooling machine for the past month), she ALWAYS has her fingers in her mouth. She is not eating as much — she will drink for a few minutes then stop and wail, as if sucking on the bottle is causing her pain — and sleeping in shorter stretches, often waking up with whimpering cries. At first I believed it to be the sleep-training regression mentioned in the How to SUCCESSFULLY teach a baby to sleep post. But then I noticed that her cheeks would intermittently turn red which...