Genetic scan

Jessica • My name is Jessica. I am married. We have a 9year old son and a daughter who is 2!
So it's been 6 years since I had my son and know Iam almost 12 weeks pregnant and I have a genetic scan on July 7th and I know i did it was baby #1 I just can't remember what they do. My doctor told me they will do a scan so I can see the baby which I can't wait for but I don't know what else. Can any of you ladies tell me?