Dear Parent,  yellowness of skin means jaundice is common to all newborns upto 14 days and may be even longer but low level. But according to day of life the bilirubin level(jaundice)should not  cross certain level otherwise baby needs phototherapy so this question cant be answered here.  Baby must be examined.. Now comes to loose stools ::: In most of the cases 10-12 immidiately after feeding is normal gastroileal reflex no need to worry if baby feeding well Adequate urine output Playful abd active No dehydration but these only be sure by doctor consultation. Most imp your baby is premature so should be more careful and better to consult as per my advice...