Went to doc Monday with upper respiratory infection. Lungs not completely clear but not bad. Got injection of lincocin and decadron. 500 mg azithromiacin for 5 days. Took third one this morn. Began to suspect I am allergic. Took a Benadryl. Fever has been 101.3 today, higher than on Monday. Tonight it feels like my sinuses are swollen almost shut. Was even uncomfortable to swallow, like it was creating a vacuum. Used neti pot and held head over steam with euclalyptus oil. Taken another Benadryl in case it s related to antibiotic. I have afrin and have used it 4 times since Monday but don t want to overdo it. What should I do?