Hello girls ? Can you please tell us if our 3.5 month old boy is okay?…

Hello girls ? Can you please tell us if our 3.5 month old boy is okay? The ultrasound said there's no bone ossification in the hip joint, has anyone had this? We also shaved his head once, now he has bald spots on the back of his head ? Is that because he lies down constantly? Otherwise, he's not lagging behind in development, he already turns over and is active.