Dear Hana, Stress isn't something we can turn on and off but there are relaxation techniques you can try. I think you are right and the tinnitus and vibrations are from the Covid vaccinations. Hopefully these side effects till disappear over time. They are not doing any real damage unless they are affecting your ability to write, play a musical instrument, etc... When mine are very bad my writing is almost illegible. I can still type but using my hands for delicate work is difficult. Tranquilizers do not help. "Nerve" drugs like Lyrica don't help & can do harm. Drs have no idea what is causing them. I think eventually they will link the vaccines to this side effect but it will take time. I wish you the Best of Good Luck.
Marko82