This is Dr. David
where did this piece of steel hit you? in the head?
if so, you need a CT scan of the brain to make sure there is no bleeding inside of the brain.
bleeding inside of the brain can sometimes cause headaches or nausea or ringing in the ears.
have you had a CT scan or MRI scan of the brain?
yes, high pitch noise can definitely damage your ear drum
I'm surprised you are not wearing any ear or hearing protection when you are hitting the steel.
you have to wear ear protectors that block out that loud noise.
hopefully with time, it will get better.
don't forget to wear hearing protection each time.
sometimes it can get better.
it is called tinnitus this ringing in your ears.
it can sometimes take a month or longer to get better from loud sound damage.
don't wear headphones and listen to loud music.
sometimes hearing aids can help.
you can read more here
you can see an ENT specialist.
which is an Ear Nose Throat Doctor.
or you can see an audiologist and get hearing tests done to see what your level of hearing is now in your ears.
best of luck to you.
let me know if you have other questions.
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