Heart defect

Logan

We had our anatomy scan Thursday and the dr who came in to talk to us (not our regular dr) said one chamber is under developed and our baby will need immediate surgery after birth. Gave very little time to explain, said he’d refer us to a specialist and left. We have been heartbroken and so upset since because everything I look up sounds absolutely terrible and rare. Does anyone have experience with this?

Also- this is my 4th pregnancy. I have three healthy daughters and we did do the NIPT testing, all negative.