This happens to me with the sound of running water even when I am fully awake, especially when I am expecting an important sound. For example, if I am in the sh

This happens to me with the sound of running water even when I am fully awake, especially when I am expecting an important sound. For example, if I am in the shower and expecting an important call on the phone, I often get a feeling that the phone is ringing. But it's just my brain trying to be super alert and picking up noise as signals. If I turn off the water, the sounds go off.