My3weeks old daugther cries during brestfeeding(she drinks 5-6 times and cries than again).i use nipple shield.she has several bowel movements per day?

See her doctor: Check with her doctor to make sure there is no physical problem causing this. A common cause is nasal obstruction or congestion which doesn't allow the baby to breathe well while breast feeding. If you hear mucous in her nose, use saline nose drops and a bulb suction to remove it. Also, make sure that your breast tissue is pulled back so she can breathe while nursing.