After birth, did you hear noises in your heart? Is it always some defe…

After birth, did you hear noises in your heart? Is it always some defect? We're immediately sent from the hospital for an examination because of this noise... I'm very worried... All screenings were good, and the third one didn't show any abnormalities with the heart. The baby is large at 4kg...born difficult...but we ourselves...Externally normal child with normal reflexes.