Ultrasound

Today i had my 13 week ultrasound and i had denied all testing for down syndrome and such. Well after they did my ultrasound and did some measurements they said i was at High Risk of my baby having DS... so they did the bloodwork for testing. Told me they’d call me with results if they were positive in a week or so. So now im nervous. I also hv a one year old son who i also denied the testing but this time they said they saw something. Idk what to think