I was like this once, i didn't go on antidepressants but i thought my world was over. Let me just tell you that this a small blip and you will learn to live with it. The intensity at which you hear it now will dampen by ten folds as time goes on. In some people it can also randomly disappear

What helped me -Sleeping with a fan / aircon / noise machine -Listening to music / coffee shop bg sounds during work -Not having many silent moments at home, having music on etc to distract myself

I always wear ear plugs at loud events like gigs etc, something I always should have done. You need to stop listening to it, to see if its gone or how high it is. Eventually your brain will zone it out.

also this is a crazy suggestion but moving to Asia also helps, there is always traffic, fans, aircons and beach sounds