Changing formula as baby was drinking kkh formula today just discharge and changed her to s26

Hello mummy’s please help out a newly mom here .. I get very paranoid as I just changed my daughter formula because kkh say is not recommended for me to bring my own formula so I used theirs and today we just discharge I been letting her drink s26 and her poop has been like that ever since .. I’m very worried and also she keep pooping like that this is the 3rd time already #advicepls #firstbaby #firstmom