kidney issues?

Rebecca • Baby boy born June 2015 - baby girl coming September 2016!
Hey mamas- anyone dealing with their little ones being diagnosed with hydronephrosis or kidney dysplasia? 40+1 today, went in for an ultrasound and they spotted some trouble on baby girls right kidney. They hadn't seen anything wrong before now, but they said it could be fluid or cysts; were supposed to get a call back tomorrow after a specialist looks at the sonograms. Anyone else had this with current or past pregnancies? Looking for some reassurance- I've had some rough health problems this past trimester so I'm kind of preparing myself :(