i have been to a doctor, for symptoms that have faded with time, i have been sick for 2 weeks now and was put on a 3 day dose of zythromycion and i have a history with clostridium difficile and sevire antibiotics allergy, i have a history with asthma and phnuemonia. i have been coughing violently, yet dry, for almost 3 weeks now. i have been exposed to strep but was not notified if i had it. please help !