Should I Discontinue Valsalva Maneuver For Eustachian Tube Dysfunction?

Hi there, I have suffered from (I think) Eustachian Tube Dysfunction for 3 years now. I have never had ear problems in the past and am a healthy 31 year old female. All of a sudden one day, my right ear started feeling as though I was descending on a plane at all times. I am able to clear it by doing valsalva maneuver but about 5-10 minutes after I do it my ear feels even worse (more pressure/fullness). Continuing to do valsalva just makes the problem much worse. Every once in a while I will swallow or yawn and my ear will clear and it s the most amazing feeling in the world, but within 5-30 minutes, the pressure is back. It seems like the more I try to fake yawn to clear my ear, the more the pressure builds. This is seriously affecting my day to day life - it is on my mind at all times and I have been to several doctors with no answers. Thank you in advance for any recommendations!