Please be cautious taking any of our advice regarding your health - we all mean really well, but few, if any, of us are medically trained.
I found the following link on MayoClinic.com regarding the general differences between a bacterial and viral infection: http://www.mayoclinic.com/health/infectious-disease/AN00652
Take comfort that most medical associations/organizations are really trying hard to prevent the use of antibiotics. We don't have any in development to protect us against some emerging super bugs, and the easiest way to prevent that is to limit the use of current antibiotics. Good news is that if we stop using some, it will only take about 10 years for the resistance genes to be eliminated, and the antibiotics to become more effective again.
In my case, I was very prone to strep (it can only be diagnosed through culture) as a child. I still get occasional sore throats. It took having lymphoma (cancer of the lymph nodes) to realize my sore throats are actually the swelling of my adenoids/tonsils, both of which are part of the lymphatic system, fighting the infection.
I'm a big fan of recommending you speak with your doctor. Just because they write the prescription doesn't mean you need to fill it if your desire is not to do so.
Hope you feel better soon.