Well, I'm feeling somewhat better today.
In fact, as soon as I got to work this morning I walked right into my boss's office and asked for a raise! Don't worry, not as scary as it sounds - she's my age and just had a baby boy herself, so we're pretty close. Anyway, she's all for it and will advocate for me to her boss today. However, she also let me know that she's most likely leaving her position and will tell her boss on Friday. This definitely is an interesting development! If this happens, I would most likely be promoted to her job and get a significant raise (I'd hope for 5-10K), as I thinking my job wouldn't be replaced due to some programmatic changes so I would be taking on more in general.
I also talked with her about how I'm wishing I could stay home after my baby's born, and she was saying after she crunched numbers, if you include public assistance and tax breaks and such, and the cost of daycare, it really can be doable. I hadn't thought about tax breaks and welfare (I hate to go on welfare over a choice I make, but at the same time it's not fair that we can't raise our child the way we want to on one salary, right?). Anyway, long story short = lots to think about and maybe things aren't so bleak! And, even if I do leave, it would be after several months of a higher pay, and I could set more aside.