Well I was on omeprazol and my OB took me off because it wasn't super safe and tested during pregnancy! But the doctor that confirmed my pregnancy told me it was fine. I think that there are some medications that are on the edge (like zofran) and had many different opinions. I always choose the natural route during my pregnancy though and I've suffered with GERD or acid reflux my entire life!
My dr told me the one she put me on was safe but that there was one in the group that wasnt safe i just cant remember what one it was
I think it's category B like omeprozol! There's no proven risks! Some doctors just have different opinions (:
Omeperazole is a category c. And ranitidine is pretty much the safest. And most doctors prescribe it.