That stretching could be as a result of colic which most infants experience. Nothing can be done as his intestines are trying to be set in the right positions. It causes babies slot of discomfort. But will completely ease off when they reach three months. About pooing, there's nothing to worry about. It's completely normal for some infants to pass through this stage when they are more than three weeks. If he is urinating, it's an indication that he is fine. You can begin to worry if...