Nuchal translucency test

Hello Girls,

I'm 20 weeks pregnant today I had my anatomy ultrasound and the only thing they found abnormal was Nuchal translucency test usually that has to be 6 or under and it was 6.62 . Dr said he wasn't worry because all bloodwork for genetic and syndrome were negative, however as a doctor he will test me on January with cardiologist to check the heart. Any of you went thru that?????