Hello, Welcome to HCM, I suppose you are suffering from Viral fever, Viral Fever is usually a self limiting condition, which usually takes 5 days for recovery. We can catch a virus from other person who is suffering from Viral fever through coughing, Sneezing. There is no indication for antibiotic therapy in Viral Infection, but our body s immunity gets lower during a viral infection and we can catch secondary bacterial infection, so if a doctor finds any signs or symptoms of secondary bacterial infection he/she adds antibiotics. Thank you.