My son is formula fed and has very mucosy stool and it is seedy it is a very light color almost white with a foul smell should I be concerned he is 3m?

You need. to speak with your Pediatrician..a change in formula is most likely needed since there may be a INTOLERANCE to one of the basic ingredients in the baby's present formula! NOT TO WORRY...this is a VERY COMMON problem! Hope this helps! Dr Z.