down syndrome

Jessica

so I had a nuchal ultrasound at 12 weeks and they said my chances were low cuz of my age I'm only 23 and today I'm 23 weeks and they said the baby nose isn't hardened like it should be and has fluid on his kidneys and they're saying that some markers for Down syndrome but they also said since he is mixed with African American his nose could be taking longer to harden.... does anyone know anything bout this??