My daghter is 9 months old. She had really horrible colic for the first few months. Now, she is pretty happy, but she never cries. She just screams. She can go from happy, giggling, to all-out screaming instantly. She will scream for all the reasons other babies cry. She's tired, hungry, bored, doesn't want to be put down, doesn't want to sleep, etc. The screaming is really high pitched and awful. Has anyone been through this? Any suggestions? We have been to the pediatrician a LOT and she's healthy and mostly happy.