I was diagnosed with an ear infection on July 10, and completed 10 days of Augmentin. I improved, but now, 5 days later i have headaches, much mucus nose and throat, sore, red throat, but also unspecific tooth pain. Could I have a sinus and or ear infection back, or can tooth pain actually cause the other ? Don't know whether to go back to my Dr. or see a dentist (heven't in years).