What does it mean when a baby is fussy at the Breast when feeding?

It could be that they are on a growth spurt? Usually they become fussy when they do not get enough milk due to the spurt. But it will go away just let baby latch so that our body will produce more and keep up with your baby's demand. Growth Spurt http://www.whattoexpect.com/first-year/ask-heidi/baby-growth-spurts.aspx?pos=1&xid=nl_YourDailyNewsletterfromWhattoExpect_20151028t Another helpful link http://kellymom.com/hot-topics/growth-spurts/