Has anyone had the first trimester screening before? The testing wasn't available when I had my twins who are almost 5. I have an appointment on Monday for the screening and they told me they'll be doing a blood test, an ultrasound, and then the dr will be going over the results with me after. My main question is, is it a regular ultrasound, or is it a 3d/4d ultrasound? You'd think when looking closely for the fluid in a child's neck they would be looking at a better ultrasound than the generic 2d, but I didn't want to get my hopes up.