Does it mean anything, kind of concerned?

I am 31 weeks pregnant and at 30 weeks I went for an ultrasound. The technician did her job then said told me and my fianc�e she was going to see if there was anything the doctor wanted to look at again. When the doctor came in he flipped through the pictures she had taken and laid the chair back down and started looking intently at my baby's heart. He said the blood flow from the cord to the baby was good and that was all. When he finished he looked at the technician and said her doctor will have to decide if he wants to do another ultrasound or not. My fianc�e has bad heart problems in his family so we were kind of worried. Should we be worried about what the doctor will tell us at our appointment on Wednesday??