My Symptoms Are, Lack Of Energy, Hoarseness, Temp. Of 93.6.

My symptoms are, lack of energy, hoarseness, temp. of 93.6. doc. prescribed azithromycin 250 mg which I have taken before with success. this time had to stop after 4 days. mild diahria , 1 trip to bathroom. doc. said to cease, unable to take final pill. no fever, sore throat, muscle aches, headaches, etc. doc. then prescribed levaquin antibiotic. have taken before. don't like it. tore calf muscle. I am seventy years old and have a work out regimen. weigh 160 lbs. don't smoke. do I have bacterial infection or viral infection ? has been a week now. am I contagious or not.