Cows milk allergy

Dee

My 12 month old just started cows milk on her first bday last week and she has huge rash and doesn’t want to eat solids and hasn’t pooped in almost 5 days . Doc says it’s a cow allergy and to stop . I was going to stop pumping too because she has been strictly Bm but now I feel I Have to keep going .. ugghhh so hard . Has anyone else had this issue ? And what did you do to help the situation?