R.S.
UGH! Bless your heart! I'm just going off of my girlfriend's experience here---it could be an allergy to milk or soy. You might want to try a soy formula, and if that doesn't help over a 2-week period you'll have to go to something else. The frustrating thing is at this age the allergy tests don't work--not until 2 yrs. old. If you're breast-feeding, it can mean a complete diet change on your part. Good luck! Let me know if you need more info. on this.