I tried one with after my last pregnancy. I thought it was really uncomfortable (except for when standing and not moving) and kinda useless. I took it back to the store. I don't think it's worth the money. Btw I got mine at babies r us. Don't remember which one because it was 3 years ago. But maybe it'll work for you.
I didn't, but this time plan on using the belly bandit. I heard really good things about it from some friends of mine that used one. It helps with your back pain in the first couple weeks too.
Thanks NicMom for the referral I really have no idea what to use or where to begin. So helps to hear about others research too. I will check on Amazon for that one and read some more reviews.