It is technically known as "ringing of the ears" it is really not a big deal, I would not worry about it. I am a nurse, trust me on this one.
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"I don't want to know emptiness, take me down to the water wanna be baptized in your love far away from the lonliness, take my heart and wash away the fear let me be baptized in your love"
~Lenny Kravitz
"Baptized"