20 week anatomy scan

Well, we are having a little boy come January but our anatomy scan didn't reveal only good news. They believe our little man might have hypoplastic right heart syndrome. We are devastated but trying to remain optimistic. now we have to follow up in 2 weeks with a fetal cardiologist. I'm trying to be strong and not worry/stress myself over this because it's not good for baby, and we haven't been given a definitive diagnosis. I just don't know what to do, I'm scared, and I'm trying to be brave..