My DS is almost 4 months old. He is a great child no colic doesn't cry much except when he is hungry. The last 4 nights he has been screaming like somebody was trying to kill him. It starts at 11:30 and is usually over by 6:30. If he is nursing then he is fine and then it turns into comfort nursing, then he falls asleep and as soon as I move him or he unlatches it is back to screeming. Any suggestions???