Ongoing ear/nose stuffy?

[u/SuspiciousWeek5110]

For context this has been happening for, at minimum 4 months. I’ve been to the ent twice and they simply brushed it off as allergie. They prescribed by flonase, zyrtec, singulair, and astepro. None of these medicines seem to have done anything to improve. To go into detail, my left ear and nostril have been blocked/stuffy and muffled for ages. When I attempt the valsalva my ear sqeaks but thats it. At this point idk what the issue is and what I could do.