My son is 6 and a half weeks old and weighs 9.5 lbs. He was 7.1 when he was born. He has been having about 2-3 poopy diapers a day however yesturday he had a very watery stool and he hasnt had a poopy diaper since. He has had alot of wet ones but no stools. He has no fever and he is acting normal. Is it ok for him to not have a stool for over 24 hours?