My daughter has a lot of diarrhea with Clavulin?

My 15 month old daughter had big ear infections, she had banana syrup (amoxil) for 10 days, her ear infection still didn't go away, we went to the clinic and now she is taking clavulin but she is constantly vomiting and doesn't eat anymore... since Thursday night. We give her while eating, and we even give her a popsicle before to freeze her throat. And even with gravol before too and she vomits everything she drinks or eats