Hi, I've Been Having This Terrible Taste In My Mouth

Hi, I've been having this terrible taste in my mouth on the left side for about a month now. When it first started I had pain in my jaw and was hard to open my mouth. I am now able to open my mouth without pain but I still have a weird sensation in my lower jaw. With this I have been having a wet feeling in my left. The doctor says my ear is clear but I do have a little issue with my sinus on the left side. Can you help or have any suggestions? ??? Thank you