Hi Deb, I've never been in your shoes but I can imagine it has been a devastating experience for you. I've heard that if you have repeated pregnancies where this happens you need to take much larger doses of folic acid than the standard recommendation, and basically take it for months before ttc and at least the first 3 months of pregnancy. There are quite a few websites about anencephaly where mothers talk about their experiences - if you google it you'll find tons.

Wishing you a positive future and the child you so desire.