After awakening for the 3rd (at least, I think so), I 'felt' / 'heard' a loud buzz (more like noise/static of a radio) in my ears... as if someone turned up the volume of my ears, but no other outside sounds were amplified. This 'sound' came and went (lasted for awhile), and I was able to 'bring' it again by trying to imitate the feeling I had, although it was weaker than before. It disappeared after I got up out of bed.

The buzz also happened to me before, I believe. I've heard some people say that they hear a buzz / crackling when they were attempting to induce WILD, perhaps this is related?

AND yes, I'm sure it wasn't a fly or mosquito.