My baby is 4 days old , from birth hes had thick green mucus stools , he is both breast and bottle fed , he is passing stools that look like scrambled eggs and seems to have some discomfort, is this type of stool normal or could it be the formula?

Sounds ok, and...: Babies older than a week should have yellowish poops with the thickness of mustard or thick spaghetti sauce. Breastfeeding babies can have even looser poops. Formula-fed babies have firmer poops, but poop that holds shape would be too firm for the first 3-4 months of life. Poop gets darker, with brown and green colors blended in, and also gets firmer, as a baby gets older.