Kidney issues with baby's

My pregnancy is high risk due to my last pregnancy and my child's heart defects. When I went to my doctors appointment today and I found out my baby has something called fetal pyelectasis. They told me this is common is boys. Has anyone's baby had this issue and what was the outcome? How old is your baby? Anything to help me calm the hell down lol. I'm sorry about me being crazy I lost my daughter in march because of her heart defects and I just want to know my baby boy will be fine.