Hydro nephrosis

lo

When my daughter was 2 months she was running a fever we took her to the doctor and she didn’t have a cold so they checked for a uti and she was positive for a uti her doctor said it was rare for infants to get Utis so they wanted to check her kidneys. Turns out she has fluid in her kidneys supposedly it’s super common but I’m still freaking out. She has another appointment Friday they are going to insert some dye to see if it goes through both kidneys. I’m just so worried has this happened to anyone’s baby?