Hey BlackPup!
Been meaning to respond since you first posted on this. I've got a headache that's starting to really shut my thinking down -- but that's not the point -- just don't want more days to go by without responding, so here the rather disjointed thoughts go!

Where you are in your pregnancy... I seem to recall there tends to be a trimester -- the middle one IIRC --that they talk about "happy hormones"? Maybe that's part of it?

Always ok to question. If you think it might have been med-induced all the more so. (As that's a "doesn't count" symptom in diagnostic criteria.)
Mine's gotten worse over the years, especially in regards to depression and "ups" being mixed with more bad stuff than when younger. A couple of thoughts on the article.... I couldn't help but be struck by the "growing out of it" thing. Which.... well, then it probably never was, right?! Prior to mid/late 20's there is typically... let's call it rambunctiousness ... and that alone does not a pathology make. And isn't that exactly the reason for the reticence in diagnosing too early (ie. teens)? Maybe it wouldn't be entirely wrong to push that reticence (even if lesser) forward a bit? Not saying there aren't pretty clear cut cases in that age frame (mine started for sure at 20, but probably a bit before), just that "outgrowing" it seems a pretty good indicator of misdiagnosis/over-diagnosis to me.

As for sleep, personally mine can get quite crazy and yet no other sign of being hypo. Guess it's like anything... "normal" is different for different people. Your own pattern is the best guide. Is it typical? Atypical?

Only real "advice" is to avoid any big decisions while "under the influence". Of pregnancy, that is(!) It can really have big effects. See where you are awhile down the road afterwards.