my baby boy is 7 weeks old today. he hadn't 0assed stool for 2.5 days n was very fussy at night. also threw lot of milk after feeding and was not settling down . we gave him rectal stimulation n he pooped alot. it was semi paste to liquid. he is still very fussy n not settling down. he might have stomach discomfort. what can we do here to settle him. is there any food that I shed avoid. he is exclusively breast fed. he is constipated