This is Dr. David
you always want to protect your ears and avoid very loud concerts and loud music
which can damage your ear drums and cause long term tinnitus.
do you have excessive anxiety symptoms.
it sounds like your anxiety symptoms are focusing on something and that can make symptoms worse.
have you ever had treatments for excessive anxiety?
do you wear ear plugs around to protect you from loud sounds?
To answer your question as you have asked it.
Yes, anyone in a completely silent room can here a very low level white noise if they pay attention.
That said, there are a number of causes of actual tinnitus, if you were to have it, that would need to be ruled out.
These would be ear/hearing a number of causes here...so ENT.
TMJ, Cervical spine problems.
A problem with the small bones in the ear.
Tumor [usually loud and one sided].
To me, it sounds like you have something not to worry about, as your doctor said.
OK, so that is an initial answer…. Please use reply to expert if you have further questions. When you are ready, please click a positive rating [hopefully excellent]. If you forgot something, come back. I am here daily.