High risk pregnancy CHD

Ladies, yesterday was such a hard day. Our first baby has a Congenital Heart defect and is doing amazing. We didn't feel right about her being an only child so we went ahead and are having number 2 in Feb(after tons of doctor and genetic counseling). We knew we would be monitored pretty closely. So we got a scan at 16 weeks then at 20. We were supposed to go over the scan yesterday but they didn't have results yet. So they called and said we need to see the cardiologist and we need another anatomy scan. But won't tell me if they're looking at something specific or not. I want to be optimistic but this is killing me. I know stressing is bad for everyone but it's so hard not to worry.