28 years old, nuchal translucency with blood showed trisomy 18 risk 1:1300. Dr said it's fine, but I'm worried. Does this seem high?

Trisomy 18 risk. A result of 1:1300 indicates that in 1300 pregnancies with the exact same test results, only one of them will result in a child with trisomy 18. This is approximately a 0.08% chance of trisomy 18. This result gives a higher chance than the best risk group (less than 1:10, 000) but still reflects a low likelihood of trisomy 18.