So quadruple marker showing high risk is your concern!
Did you do 4D ultrasound for anomaly?
And if its normal we are on the brighter side.
If you can afford
Please go for a NIPT , which is a blood test!
Next Steps
If NIPT is negative dont worry!
If NIPT is positive you may have to go for amniocentesis which is testing your amniotic fluid to see whether your baby has got downs syndrome.
Please feel free to connect to talk about it.