Background info:Baby girl is 15 weeks weighs 14 lbs. Exclusively breastfed, Several wet diapers a day and at least two bowl movements typically yellow/greenish but more greenish in color lately. She started out a fairly content baby but the past 10 days much more fussy, not taking long naps, pulling off breast and crying more often. I just started back to work 3 weeks ago and the first few weeks seemed to go fine. Baby was happy and i have been able to pump 12 oz each day. Took to dr. 1 week ago and mentioned the increased fussiness and that baby has had runny nose/mild congestion since 3 weeks old. Ped said she may have an allergy to cows milk so i stopped dairy but not seeing any real improvement yet. Daycare said she was very miserable again today. I feel there has to be something wrong with my milk but i cant figure out what has changed she used to be so happy.