Sending you hugs
If you can get a new car at one of the really great deal prices that are going on right now, you might be able to get a payment less than 200

Factor in the gas savings and no repair bills and you could end up better off

Why not just explore the possibility, and then if it's not feasible, put it off until things calm down. This is the time of year to buy a new car, though, and I keep seeing ads on TV for $99/mo payments, etc. If your credit is good, you can get a good deal.
Have you considered working at night, so that your hubby would be with the baby, instead of a daycare. My sister had to do it when they lost one car, so that they could share the car, and it's worked out wonderfully for them. She's now an assistant manager at a WalMart and makes really great money. She started out stocking shelves for just above minimum wage and now two years later makes about $20/hour plus benefits.
Things WILL work out. Just remember that you're in it together and keep the faith