Ultrasound reading

Ature
Hello ... Just received a call from the nurse saying they found a cyst on my baby's brain on the ultrasound ... I didn't have the genetic testing done because my dr didn't think I needed it and I'm low risk.. She said everything else seems normal and told me about the maternity 21 test I can take... Just wondering if anyone else has had this scare? :-/ I'm stressed over it