Ladies I'm at valley children's hospital for testing for my sons heart I'm 24 weeks pregnant & they…

Ladies I'm at valley children's hospital for testing for my sons heart I'm 24 weeks pregnant & they cardiologist said that there lack of blood flow to his placenta to baby boy, & that he's going to be a early baby, have any of you been thru this? if so what was the experience? I'm kind of worried..😰