You just did +1+(-1)=you do it
So take some advice don't play with kids health and that too 1 year olds
You just gave a probiotic(+1) and an antibiotic(-1).
U would have advised but no, not after you self prescribing a infant.
Next Steps
consult a doctor
Health Tips
don't do such nonsense again, kids that young are very prone to sudden deteriorations.