quick question ladies. i dont have an appointment from wic til loke july 13 ut the thing is i dont…

quick question ladies. i dont have an appointment from wic til loke july 13 ut the thing is i dont have infamil for my baby so i went nd brought like two boxes now the question is at the hospital they gave me the liquid ones nd so i bought two boxes of the same lne but i saw the have podwer ones as well can i use the podwered ones or do i hve to go to her doctor nd tlk about thay with the her doctor??