Welcome to HCM
Please consult your pediatrician
as your child is suffering from diarrhoea
either infective most probably or side effects of medications less likely .The medicines going on are appropriate and can be continued. however greenish or whitish foul smelling stool needs to be tested for pus cells on a stool routine test and if positive it should be treated with appropriate antibiotics as per your pediatricians advice. Till then you should keep your baby well fed , well hydrated , continue breastfeeding
if she is breastfed , if not give her oral rehydration solution.