Sleep.

Oh sleep, how I miss you.  We've really been struggling around here.  We got E down to one waking a night; it was quick, I'd feed him and he'd be back to sleep within ten or so minutes. 

Three nights ago, E woke up twice, but went back to sleep quickly, and A also woke twice--the first time was around 9 and he was cold, and the second time he woke up screaming that something was in his room.
Two nights ago, E woke up 5 or 6 times.
Last night, he woke once, but was awake from 3-5:30.  It impacted his naps, which were 11-1 and then 4-4:45.  It's been a rough day.  Last night, I got frustrated at not being able to figure out how to get him to sleep/stop crying that I took him downstairs to play.  As soon as he adjusted to the light, he was happy.  **sigh**

I'm pretty sure teeth are to blame, though I don't see anything popping through in there.  I gave him a teether, but he's been playing with it more than chewing on it.  It just looks like his lower gums have the ridges of teeth roots.  He doesn't have any of the other symptoms, but it's just what my gut's telling me.

It's days like this that I'm so thankful for this time to not have to work, to not have to have my brain on, or worse, have my brain on and PERFORM for 14 year olds.