I got off to a slow start in the hospital but a lactation consultant and a nipple shield got me going. My baby is on a demand schedule every 2-4 hours day and night. He nurses for 15 to 45 minutes each feeding and seems to be pooping and wetting well. He had jaundice at 1 week and was on a light machine at home for 2 days. He weighed 7lb. 4 oz at birth and we were not told what he weighed when he went home. He wakes us at appropriate times and is never terribly fussy and appears satisfied after feedings. At his 2 week checkup he weighed 7 lbs. Everything appears fine but when I weighed him today, I find he has gained no weight! He will be four weeks old on Wednesday. He appears alert and normal developmentally. I have pumped and supplemented with breast milk but he has never had formula. I will take him to the Dr. tomorrow but should I panic?