Baby's kidneys dilated at 29 weeks

Tris
My baby boy was diagnosed with a dilated kidney at 20 weeks (has progressively gotten worse since then going up to 1.2). His right kidney was normal, but now it's dilated to .45 (I guess the cut off is .4). Anyone else experience this and have everything be ok? The sonographer acted like it was awful (and wouldn't even take a look at his face or print me a pic...ugh!).