Sounds pretty much like my public experience.

Make sure you're at least taking folate and possibly iodine supplements if you aren't already. Folate supplements are important for the first few weeks when the neural tube is closing. If you are in australia, iodine supplementation is also recommended - its most important in 2nd and 3rd trimesters. The Blackmores Pregnancy&Breast Feeding tablets are good, or they have a Folate+Iodine one.