I agree with the others, perhaps you could have the nuchal translucency scan to test whether further testing might be warranted? These are big decisions and you need to have thought through the what-ifs if either a CVS or an amnio revealed there was a genetic abnormality.

I returned a 1:41 risk (at age 35) so proceeded to have a CVS. To me it was important to get that test done quickly as my DH was leaving to work o/seas for several months and it was important to get the results before he left. We had already decided that Downs would not be a reason to terminate the pregnancy, but wanted to know if there was a more severe abnormality that may result in the baby dying later in preg or at birth in order to prepare ourselves. If you choose to terminate the pregnancy due to severe abnormality, I understand the termination is more easily done earlier in pregnancy, so the CVS is better in that way. Also it wasn't clear from what I read that there actually was a higher risk of spontaneous abortion with CVS as the results might include miscarriages that would have happened anyway, which is less statistically likely later with the amnio.

I would recommend if you're thinking of any of this to get in touch with a genetic counsellor as they are in the best position to explain what it all means and what decisions you might need to make. Good luck!