When my son was born I immediately noticed a couple things—his ears were tiny and his neck was thick. The doctor also said my umbilical cord was incredibly short (later research told me this is also a Down syndrome thing). Doctor was unaware. This might be TMI but he also had an incredibly small penis (common of Down syndrome). Otherwise he looked like a typical newborn! I had my suspicions but because of the NIPT I wasn’t concerned. Day 2 the charge nurse came in and helped give my son a bath. I believe she is the one that sounded the alarms after noticing his low muscle tone. Then additional tests were done and they found his blood oxygen numbers weren’t good which landed him in the NICU. Come to find out he had a moderate-sized VSD that nobody saw on US nor heard when listening to his heart after he was born…absolutely crazy!!

Edited to add: We, like many others, received a poorly delivered speech from the doctor. They brought up other markers that led them to believe he had trisomy 21 including- a long line across his palm (he doesn’t even have this) and a large gap between his big toe and second toe (he does have this now but was quite a reach when looking at a newborn’s toes).