I do sympathise - there are enough dilemmas around starting a family without GERD on top! I did take Zantac whilst pregnant and was OK on that and tons of Gaviscon.
I guess one way to think about it is that if you have a Nissen somewhere in your future, you would want pregnancies all done before that. I think, from my own experience with pregnancy nausea, the real dilemma comes when you already have one child to look after but you have to plan a second pregnancy knowing you may be ill for most of it!! You can't plan too much though - pregnancy may make you worse, it may even make you better, chances are you may be much the same for most of it. Can you go and talk to an obs cons to see how they would manage things if your GERD was bad?
Is the LINX a possibility for you?
Hope some other mums have answers for you!!
New stuff: GERD, Recurrent cystitis/Overactive bladder
Lifelong stuff: Food allergies/intolerance, eczema, asthma