Sinus Drainage Help?

I have sinus drainage and it's becoming an ear infection. This has been recurring and can go away without doctor's visit, but I need faster help than multitudes of Tylenol (8-10 day). It's not allergens like dust or pets, there's no smog in the air. I don't know what is causing it, I just want the drainage gone. Any help on that?

And I have some amoxicillin from the last doctor's visit. Roughly eight months ago. Is that still safe to take? Will it help but just not be as effective?
Sinus Drainage Help?
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