Does a sinus infection cause a sore throat, clogged ear and hearing difficulty?

Hi doctor,

Recently during vacation, I suffered from a sinus infection with a painful sore throat, mostly left side. I had two flights and experienced horrible pain in my left ear during the descent. The left ear felt blocked or muffled throughout the week of vacation. I started Amoxicillin. Return flights were not too bad. However, it is ten days now, and the left ear is still plugged. No drainage or pain, but sensitive to loud noises. Some hearing difficulty. Yawning, swallowing, or plugging my nose have all been ineffective. I have taken Sudafed, nasal sprays, and earwax drops. I am starting to worry. What should I do? Thank you.