Yeah and you get used to it. For me it took several weeks or months to get used to it and I was constantly thinking of it. I felt very scared it would get worse but it didn't.

If it's not an annoying sound, its probably your fear that makes it hard to relax to. It was like that for me. The fear was worse than the sound. And then the fear goes away when the sound doesn't get worse in weeks, and then you can finally stop thinking about it.