If I were you, I'd consult with a GI doc, and hopefully get referred to a really great Nissen surgeon. Meet with them both and discuss your concerns and see what they say. I can't believe that a Nissen would preclude pregnancy...in fact, if you're prone to reflux, being pregnant without a Nissen could be horrible. I had heartburn for the first time when pregnant. If I'd had GERD back then, I don't know how I'd be able to take it. Also, it would help you avoid taking PPIs during pregnancy, which must be a good thing.
Here's a thread with some forum members discussing pregnancy after Nissen:
Here's a quote from another forum on the topic:
I just had the fundo this past Aug. 27th and I asked the surgeon after the operation about childbirth and delivery. I plan to have kids within a few years. He said I would actually be at an advantage because most people get heartburn anyways during pregnancy and it would have made the condition worse, had I not had the surgery. I also asked him if there was anyway I could do damage to the wrap during delivery and he said no. I hope this helps.
So, there are others who have asked the same question. You could probably Google the topic and find lots of information out there. Just consult with your doc or surgeon and have a chat about it. I'm sure you'll get the information you need.
Good luck with your decision!
Nissen Fundoplication 2/09
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”