My boy of three years stomach is big even when he had eaten nothing it's still big what could be the cause?

Paediatrician

It is nothing to worry about. However if he is experiencing any form of pain or discomfort or you are still worried, kindly see a Paediatrician

Most toddlers usually have what look like protuberant abdomen as part of their growing up and the curving of their back at such age.