Wow, I thought this thread had run it's course in early spring, with every possible perspective on the spectrum being represented. Shiloh, you still sound just as stressed out as you did nearly three months ago when you started this thread. Actually, more so. With the tone of your post, my heart just plummeted and I felt so terrible for where your head is at. I just want to give you hugs and tell you (yes I know you know this) that all this stress isn't good for you and your baby. It really isn't, and the power of a positive frame of mind is what you ought to focus on, given that genetic screening is clearly not for you. Really, TRY to relax and stop thinking about the risks with testing, since you are not going to have them, and if the thought of an anatomy scan stresses you out so much, just skip that too and try your hardest to relax and enjoy the rest of your pregnancy. I'm afraid you are going to start having nightmares of babies getting poked with amnio needles and all those statistics swimming around in your head making you dizzy. You're pro-life, you're definitely going to have this baby, you don't feel comfortable with the accuracy of today's genetic screening (and in the end, like you said, feel that any statistical likelihood rate still equates to 'it could happen, or it could not'), so just try to focus your thoughts on what you can do to actually enjoy this pregnancy.
(hope that my soapbox-preach didn't come off terribly and was heard in the spirit of which it was intended, which was simply hoping very badly that Shiloh gets to a peaceful frame of mind and can relax at some point and get past the worries of what abnormal screening results could possibly mean, because my heart hurts for the acute insomnia-inducing stress she is currently in and has been at least on and off for months--she doesn't deserve that!)