I have been on the Z-pack for 5 days, today being my last dose for a sinus infection. My symptoms have remained the same since I started, and even a bit worse now. Stuffy nose, headache, left ear is extremely plugged interfering with hearing and I have had a sore throat as well for over a week, with the back of my tongue feeling swollen and painful. Should I see my DR for a stronger Rx or continue to wait it out for the z-pack to kick in? I know it works in your system for up to a week after the last dose, but I feel I should have some improvement at this point, 5 days into the antibiotic. Please advise! I m sick of being sick! Thank you :)