Yes, I did. And I have a healthy 11 month old now.
I have severe reflux problems as well as achalasia. The nurse suggested not taking it, if I could possibly do so. I told her that wasn't possible. I'd not only be miserable, but would have been at an even greater risk for esophageal cancer.
My understanding is that this is one of the drugs that they haven't proven to have / not have an effect on a pregnancy. Therefore, they suggest not taking it, when possible, to be on the safe side. That was not an option for me though and all was fine.
Kristi
P.S. Feel free to PM me if I can help more!