Her pediatrician said that colic tends to set in around 4 to 6 weeks of age. She'll be four weeks old next Thursday and while I won't say that she outright screams for three or more hours each day she certainly isn't a happy camper for at least that long. I manage to keep the screaming at bay by frequent changes in position and singing and rocking and pacifiering and jostling and leg-pedaling and humming and walking and standing on my head and tearing out my hair. So I'd say she screams for about an hour if you string all the screaming sessions together. In between the screaming sessions are fussy sessions interspersed with crying bouts sprinkled with the rare occasion of complete silence during which we hold our breath only to exhale 30 seconds later when the misery begins again.
I'm not completely convinced it's colic, mostly because the screaming really isn't that bad and the article about mothers having too much breastmilk says that infants can display colic-like symptoms. Tonight was one of the bad nights. Last night went remarkably smoothly. Today was the first time in her whole life (other than right after birth but that's colostrum and not milk) that she was hungry enough to nurse on both sides at one feeding so perhaps that's related to her crummy evening.
Along with giving the camera dirty looks, my girls also like to pout and look grouchy. I've never seen cuter grouchy faces though, have you?