High risk trisomy 18

Avi

Hello everyone, I just got my blood test results which I did with Ultrasound and it came with high risk of trisomy 18. 1/144. I am 39 years old. The dilemma is I did NIPT just a week before my ultrasound and blood test and That showed all negative. I am now so worried and confused. Has anyone experienced this. Did you do NIPT again?