Oh, I'm sorry to hear!
While I can understand the emotional side of this is very hard, I tend to want to solve problems, and helping solve this problem for your husband is the way to his heart for this new little one among you.
What you can do to show your support for him (they need support, too :) is do a little research on new ways you can cut costs, and show your husband how much it will save your family. He will REALLY appreciate this. Like, you will switch out three meals a week with meat in them for rice and beans recipes. You will switch out pre-packaged, marketed snacks for home-made ones (no more Juicy Juice, etc.). You will change up your cell phone plans if you find you're not using those extra minutes. Cancel the cable. Start getting movies from the library instead of renting them.
Get baby clothes from thrift shops instead of new. They're healthier than new clothes with all of those chemicals (laundering gets rid of a lot of them), and they're so cheap and perfectly cute!
Oh, and if you haven't nursed before, read up on nursing and go to some La Leche League meetings in the latter half of your pregnancy to tackle problems before they come up (it's incredible what even the hospital procedures and policies do that inadvertently undermine nursing because they confuse the baby or separate mother and child when child needs to nurse; instead, baby gets bottles of water that fill up the tummy and keep the mother's body from producing milk). Nursing will save you thousands of dollars in formula *and* in medical expenses, since formula-fed babies end up getting sicker more often.
Also, if you haven't cloth-diapered before, look into the awesome new options out there. They're so easy now, with great designs. Look at BumGenius, Bumkins, Swaddlebees and Thirsties covers that go over pre-fitteds like Sandies. (Find great deals on websites like diaperpin.com and be very careful of venues like eBay, where some less trustworthy folks sell yucky diapers that don't work very well.) You can spend $200-$300 for really nice, top-of-the-line, brand-new diapers, and this will cover all of your diapering expenses through potty training, and this will save your family about $2,000 in what you would spend on disposable diapers (and this doesn't even include the cost of disposable wipes. Get cloth wipes or use wash cloths from like Dollar General, and keep a thermos on hand with nice warm water in it, and you save $hundreds more). You can even *sell* your diapers when you're done using them.
There! Making all of these choices just saved your family thousands and thousands of dollars!
You could also consider what you like doing, and what you're good at, and think about how you might turn that into an at-home business for yourself. They're all over the place - mothers everywhere are selling all kinds of things! There's a great website about being a momtrepreneur - I think that's how it's spelled, and the woman's got all kinds of advice.
You might even be able to get your 7 1/2 year old daughter involved, if it's easy enough!
L.