All day since my LO got up, all she wants to do is eat. For a good 6 hours she has been switching between breasts with hardly abreast I between, enough to burp her and change and the quick 5-15 minute nap. She is exactly 3 weeks old today.  I also have changed a lot of diapers today, way more than usual.  Is she going through a growth spurt??? I'm going to guess giving her a bottle of pumped breast milk would be out of the question till this passes over?