Hello, I started with a ear infection, and it went to a sinus infection. Have had chronic sinusitis over the past 15 years, but had none for 3 years until last week. I have been on Amoxicillin for 5 days. My ear no longer hurts, but still have headache, and from past experiences, I would say it's my sinuses. My ENT is now retired, so only went to my primary care physician. Would Mucinex D help thin the mucus. This has been an ongoing problem for years. I also have TMJ really bad, and that doesn't help the headaches. Thank you, Dot