I agree. Don't wait. I am 6mo pregnant and my baby has an Atrioventricular Canal defect. From what I have read the baby may not show signs until 8-10 weeks of age. One sign is problems breathing.
Better get that baby checked out now, it could be a septal defect, you need a peditrition to check him out ASAP, this is not something that you should wait and see about.