So, I think I am fighting a sinus infection. Or so the doctor said. I'm not sure what it is. I have a slightly red, irritated throat (no pain, however), dry coughing, swollen lymph nodes (not painful either), inflamed nostrils (cannot blow out anything), and very mild ear aches. This has been going on for the past 6 or 7 days. What is it? Strep? I'm taking antibiotics, but my current one is causing me nausea. Please, help!