A unexpected visitor

What was it?

I was almost asleep in my bed the other night, curled up on my side. Suddenly the air felt dense and a loud buzzing filled the room. Something or someone was there but I could not move or turn over to see them.

Who are you I asked. Show yourself.

One hand became free and I lifted it to feel, I felt soft doughy flesh and a mouth without teeth that I traced with my hands. Then it was gone.

Who or what was it? why was it there? Any ideas?