Not sure what to do

I went to do an early scan and found out my baby girls has e.i.f. I spot on her heart that can be a soft marker for Down syndrome. I'm young 26 and I did my NT scan that came back great. 1 in 10,000 chance. But now I'm not sure if I should do an amnio or not. A bunch of people around me keep telling me I should and honestly if my baby had downs i would get an abortion (everyone is entitled to there opinion this is mine) but I'm scared that she's perfectly health and I'll just go through these unnecessary testing that can cause a bad outcome. Not sure what to do.