6 mm nuchal fold and EIF

I went and had my 20 week scan on Friday and the first thing he did was point out a bright spot in my baby's heart which he said can be a sign of chromosomal abnormalities or could mean nothing. He then pointed out a nuchal fold measurement of 6 mm which he said is high he said he likes to see 5 mm 😭 he said these two combined together means that I should have further testing so he gave me a blood test and now I have to wait two weeks for the results. He said he's almost positive that the baby will be fine but these things are signs of Down syndrome. Has anyone else had these two markers? 
Update: I got the blood test results back and they were negative for any chromosomal abnormalities !! 😊