Genetic testing

So yesterday I went to the dr for a follow up visit to get the results of the bloodwork & an ultrasound that was down to check for any deformities. Bloodwork came back they there was a high chance of down syndrome where my ultrasound showed the baby was perfectly fine. Doctor did say bloodwork has a higher chance of being wrong due to that a lot of things can mess with the chemicals in my body ex. nausea. She said she truly believes that baby is fine. I am 99.9 % sure my baby is fine  but that .1% keeps replaying those words in my head . anyone has had a similar situation?