If there is no cardiac motion observed for 39 days and a delay in conception detected on ultrasound, it could indicate a potential problem with the pregnancy. It may suggest an early fetal demise or miscarriage. However, further evaluation by a healthcare professional is necessary to confirm the diagnosis and determine the appropriate course of action. They may recommend additional tests such as repeat ultrasounds or blood work to gather more information about the situation. It's important to seek medical advice promptly in order to receive proper guidance and support during this time.