Found in my 19 week anatomy scan, dr said it happens in 5% of pregnancies and not to worry. I did the neural tube defect scan at 12 weeks and blood tests, all came back negative 1-10000. Dr checked babies measurements, and kidneys to make sure baby is not at risk for anyother defects. I still am worried even though dr guaranteed it would be gone by the next ultrasound. I'm 20weeks 1day. Anyone else in this situation?