Down Syndrome?

Didn't know what else to title this but it does have to do with down syndrome of somewhat. I had my anatomy scan done today. I'm 19 weeks and 2 days. While they were doing the ultrasound they found a bright spot on my little guys heart. We were informed that the chances of down syndrome were higher (about 1 in 650) with him having a bright spot on his heart. We are not worried about it or our baby having down syndrome. We are getting tests done because we want to know what to prepare for in the delivery room and just be prepared, if that makes sense. I do have a 2 year old daughter and all of this is new to us. I just want to know how many mommas went through this and what the results were. Thank you!