Does the pressure and hearing fluctuate? Do you travel by airplane or scuba dive? Any balance issues or dizziness ? It could be a number of things, but cochlear hydrops comes to mind. I would start with an Otolaryngologist and see about getting a CT Scan that has the capabilities to do thin slicing with photon counting. There is a Facebook group for cochlear endolymphatic hydrops (Not Meniere’s) you could check out. A lot is people with similar symptoms. I’ve had some myself that was secondary to a penetrating ear injury. Also you can try to limit your sodium and caffeine intake to see if that makes any difference. Best of Luck!