Sending lots of healthy and strong vibes to the babies...and to you too!
Boy, did your post sound familiar! I can sure relate (to a point, fortunately the kits are healthy, knock wood, but getting along is another issue...). If you can't bring yourself out of this "funk" that you're in, even when everything else gets better, don't even question if you need to see your doctor about it. Like Betsy said, it is not just in your mind, it's not just a mood, and there is help. I got put on Cymbalta earlier this year after being off of anti-depressants for about 5 years. It has made a HUGE difference in my life, and allowed me to get through some very stressful times (buying a home, and introducing Ginger to the household).
I'm here too, if you ever need to talk.