ARSA detected during 20 weeks 3 days scan.

Hello Mummies! This is my #2 pregnancy , I’m currently 20 weeks 3 days. Doctor detected ARSA during the scan on my baby. They mentioned that anyone could have ARSA and does not affect the birth. But at the same time, they mentioned to take (2) different test (optional) 1) Harmony Test 2) Fluid Test To test if there’s anything wrong with the baby. I have opt harmony test today although when during first trimester it says low risk for DS. Can any mummy let me know your experience or if the baby is out healthy? #advice