Welcome in H.C.M.
I have gone through your query regarding throat infection
. You are already in the treatment and taking medicines.
Here I would like to say as you said your tonsils had been operated so now no question arises for tonsillitis
. the throat infection what you are having is pharyngitis
. Treatment you are getting is appropriate for you.
You have asked about double dose of antibiotic, which you had taken by mistake is not going to harm you and from morning follow the usual course.