Hey there... I've been like you. It drove me mad for a while. It was like that until I calmed a bit. Took a while mind you. Mine comes and goes now, and when it's back I'm able to just realise it's there, and it doesn't cause me any problem at all. It's just an observation now. Then i stop noticing it. When you're in the worst of it as you are, I think that you can't stop noticing it. That makes it feel louder. Its terrifying to think it might only get worse. Try to stop listening for it, or checking up on it, and instead mask it. I think you need a break from it to settle your nerves. Mine was so loud once that I could hear it over my bathroom fans, the place I tried desperately to get some sleep when i just wanted to stop hearing it, after about 5 days of it only seeming to get worse. My suggestion is to do anything to hide it, mask it, whatever. When your stress levels around this lower then starts to decrease on its own. I think your brains sees it as a threat right now, as its causing you stress. That will keep it being noticed. Even if yours does not go away, which it might, at least temporarily, I think you will be just fine managing it once this high stress goes away. I was like this 5yrs ago. It was hell and just needed silence. No sleep in days, very little sleep over weeks. Things I did... Running... The adrenaline during that time means I still can't beat those times☺ If I found myself in a quiet room I hummed. I turned on all fans in the house. Kept it noisy around me for days, just to give myself a break. Then one day, in unavoidable silence I noticed it, and it was much quieter. I eventually stopped being terrified of it, and its really not an issue anymore. Easy to say now though since it has died down. I remember the fear that it would only get louder and louder as it did back then. I feel for you. Its a tough place.

You'll be fine. It's just noise. It can't hurt you. Remind yourself of that.