Pregnancy: After 35 Community

I'm over here! LOL. I am 43, and at 10 weeks. Found out 2 weeks ago. Not trying, thought I was infertile due to endometriosis, which I required surgery to remove at age 34 in order for me to get pregnant with my daughter, now 8. Surprise! Of course, I have gotten rid of every shred of baby equipment that I have ever owned. About 3 weeks ago, I started to wonder why I was feeling nauseated for weeks on end, why I hated the taste of wine, and why I was so incredibly tired all the time. I actually called my GI doctor (as I have a history of GI problems) and told the nurse that I had to be seen as I had this unending nausea and fatigue (cancer? diverticulitis?). The nurse actually asked me if I still had my period regularly and when I had my last one. Hmm. I started putting 2:2 together. I then took 2 home pregnancy tests in a row one evening, and called my OB/GYN office in the morning and asked them what a false positive on a home pregnancy test could mean. LOL. I then went in for a quantitative HCG test, and my result was 65K (they need 6K to see anything on the u/s). I was informed that I need to hightail it into my doc's office and my doc walked into the exam room shaking her head.

So, it's moving along. I still don't know quite what to make of this. Now, my quandry is about the Down's screening/genetics counseling at 10/11 weeks. I spoke with this office (after I called and told them that I could not make the meeting that they had scheduled me for), and I find it hard to parse the euphemisms. So, I called my OB/GYN office and spoke with a nnurse that I know. So, it's something like, do I want to know my odds of having a child with D/S or some other chromosomal abnormality? Reading online, it appears to be, for a woman of 43, about 1:20 (at 10 weeks) and 1:50 at birth, meaning that about half of the women that tested positive at 10 weeks had abortions, or miscarriage, or stillbirth, or there was a percentage that had no testing and ended up having a child with D/S that was factored into the final data tally. They are really pushing this hard on me, and I tend to be a data-driven individual with respect to these types of decisions, so I am trying to find some stats on the accuracy of this testing, and the percentage of false positives. I also work in healthcare, so I tend to be very skeptical of testing in general, unless it is backed by hard data. Remember the days when amniocentisis was mandatory over 35? I don't know. Abortion at 10 or 11 weeks is not a prospect for me. At 35, I only had a Level II U/S and that was fine with me. I think that I might go that same route. I prefer a test that is non-invasive. Any risk of miscarriage is not really attractive at this time. I am sorry, but getting pregnant without trying at age 43 is miraculous in and of itself,