We found out on Thursday that our baby has a high risk for Down's syndrome. The risk is 1:23. I am 31 & this is my first pregnancy. Our Papp-a was 0.36 and HCG was 2.6. The Nuchal fold is 2.4mm. A nasal bone has been seen. We have opted for the Panorama Testing and had this done Friday so we should have the results in ten days. We are extremely anxious and upset. Could low Papp-a be caused by anything else? Also I've been very sick throughout the pregnancy so am wondering if that is why my HcG level is high. Any advice would be greatly appreciated. Thank you xx