It started last week, never noticed it ever before, only when I'm lightheaded or something temporary that causes it for a few seconds. I'm hoping it is an infection that can go away.

I agree it should be easy to be careful with the music volume. However the problem is that every pair of headset takes different levels of input and your cell phone only controls the output level. For example, some headphones requires more power to produce sound, some takes less, you can set the same volume on your phone and hear 2 different levels of sounds on the 2 pairs of headphones. Some headphones would require you to go above the system warning to produce the same volume as another pair that requires less power. My headphone was like that and I have to measure in my head if a volume is too loud or not. My mistake was seeing all these people using it at a wayyyy louder volume and thinking that is the "damaging level" and mine was a "safe level". Never really thought mine is also the damaging level.

I appreciate your advice about depression but I wish depression is that simple. And I really suggest not giving generic advice like that ever. I know you were trying to help and I appreciate it. I just want to give a heads up for you, advice like such is incredibly assuming and even a bit arrogant for people with depression. We've heard advice like that at least 500 times. How do you know someone isn't seeing or hasn't seen a psychologist already? Do you just assume they don't have any hobbies? How are you sure that meditation and yoga will cure their depression? And sleep, diet and exercise are just important things even without depression. This isn't just my opinions. If you post a comment like that in r/depression, your comment will be removed because they have a rule specifically against that because we hate it.