my son is 4 weeks old today. hes doing AWESOME at breastfeeding. im SO proud of him. only had about 3 or 4 bottles of breastmilk. but heres my question. when im about to have a letdown my breasts have a dull sorta pain on the sides. is this normal? why is it painful? it just started happening within the last few days. i thought maybe it would go away but it hasnt. im also having pain in my nipples. hes latching on like he always have and never hurt before.