I Have An Ear Infection And Went To The 24

I have an ear infection and went to the 24 ER who took a culture and prescribed an anitbotic A week later I was able to go into my Doc who prescribed CLARITHROMYCIN and told me to stop the other. Now the ER had called with the results of the culture and said I should take Bactrim. Since my doc put me on the other it looks like both are the same. Ears still ringing and clogged and it has been two weeks. Not sure of this Bactrim will do any better.