Ultrasound at 27 weeks? What do you think?

I would suggest putting the test all out of your mind because the triple screen test that indicate that you were high risk for Downs has an incredibly high rate of error meaning false/positive. The level 2 ultrasound that you have had has already indicated your baby was fine. An amnio is not necessary I know because i had one a month ago. Please decline it is not necessary trust me. I stressed myself out because of the triple screening blood test and I was not aware there were certain factors that will skew your results. It's a screening for certain markers it does not mean your baby is at risk. 27 weeks is too late for an amnio anyway unless the fetus is at risk example toxemia (my sister had an amni done in her 3rd trimester due to this- all was ok :-0). Do not worry you are fine. Take care.