Ailment or Pregnancy?

The past few days I haven't been feeling particularly well. The confusing thing is that I don't have a consistent feeling of fatigue or malaise, but it comes and goes, and when it comes it's relatively severe. Like just sitting up in a chair makes me tired. Holding a book makes me tired. But then the feeling will pass, and I'll be back to my "regular" level of fatigue.

When I get these bouts it almost reminds me of the flu, when my whole body aches. But I don't have any other flu symptoms-- no fever, congestion, etc. And like I mentioned, it's not constant. So I really don't know what's going on.

I'll try to get extra sleep tonight, and see if that helps. My insomnia has been of varying degrees over the past few weeks, so maybe I've just got a whole accumulated sleep-deprivation thing going on. Fortunately, T has stepped up and has been helping out more with W when I'm tired. Unfortunately, that causes problems of its own. W is getting overly worked up during the day and then isn't able to fall asleep at bedtime and winds up screaming his head off because he's over-tired. Tonight was the second night in a row W has been up past 9pm, and it wasn't pretty.