First thing I thought of when I read your post is a cow with utters where your lil' blessing is and your hubby could go as a farmer. BTW, I did a simple google search of Pregnant Halloween costumes and they are even catorgized by creative, cute, funny etc... here is a sample of what I found. :)
Hope these give you a few ideas...
Super Creative Maternity Halloween ideas for 2009
http://www.associatedcontent.com/article/1858803/super_cr...
and I also found this:
For those of you who are proud of your bulging belly and want to show it off, here are some costumes that involve painting your bare belly and using it as an accessory. All of the following costumes will require you to cut a large hole in the front of your shirt that will let your beautiful belly pop out. You'll probably need help from someone else for the belly-painting (preferably a decent artist), and make sure that the paint is non-toxic before applying to your skin—no costume is worth harming yourself or your baby!
1. Classic Jack-o-Lantern—paint your belly orange with a classic smiling face. You can wear ordinary street clothes, or overalls with a flannel shirt and a straw hat.
2. Fish-Bowl—paint a fish and some bubbles on your belly, then wear a light blue or white outfit. (hubby could go as a fisherman)
3. Watermelon—paint stripes on your belly in 2 different shades of green to look like a watermelon, then dress like a farmer.(hubby could go as a farmer too)
4. Bun in the Oven—paint a loaf of bread on your belly and dress like a chef. (hubby could go as a chief chef or table)
5. Peek-a-Boo—if you know a really good artist, you could have them paint your belly to look like your baby is peeking out. Ordinary street clothes would work fine with this costume.
6. Crystal Ball—paint your belly white or light blue, and dress like a gypsy. (traveling salesman)
7. Pea Pod—paint your belly green, then wear all green and cut a vertical slit in your shirt to let your belly show through. (hubby could be a farmer)
8. Basketball—paint your belly orange with black stripes, and dress like a basketball player. (your hubby could be a referee)
Baseball player-your belly is the baseball and hubby could be a bat... look here for more info:
http://www.parents.com/holiday/halloween/costumes/best-pr...
here are some that are OUTSTANDING! just click to keep looking.
http://www.parents.com/holiday/halloween/costumes/best-pr...
and a few more.
Couple Costumes
* “Mummy” and “Daddy”
* bowling ball and pin or bowler
* bun in the oven & baker
* cow and milkman
* hillbilly bride and hillbilly groom
* Humpty Dumpty & the king
* M&Ms
* Minnie and Mickey Mouse
* Mr & Mrs Potato head
* pregnant hippies
* pregnant nun and devil
* pregnant nun and priest
* trashy couple
* Tweedle Dee & Tweedle Dum