I had a level 2 ultrasound yesterday and my baby girl looks perfect except for having a little excess fluid in her kidneys. The doctor indicated that this is fairly common and typically corrects itself, but then told me that this is a soft market for Down Syndrome. Since I'm 34, she encouraged me to get the Mat 21 testing done (I have opted out of this testing up until now, I'm 23 weeks). I won't get the results back for a week. Has anyone else had an ultrasound d that revealed fluid in the kidneys? I've read it's more common in boys than girls which makes me even more scared.