Had that same feeling years ago. Went out to a dark place to see the stars. Ended up seeing a light jumping around on the horizon. Then there was a bright white flash that lit up the whole field and forest, but not like lightning. No shadows, no source of light. There wasn't a cloud in the sky, no thunder. It wasn't lightning.

Pretty scared, I kept watching the jumping light on the horizon. A few minutes later the white flash again. I ran back to my car.

I had the same ridiculous thoughts as you. "what if they know I saw?"

It freaked me out for a long time. The way the light was moving.... Too fast to see the movement even, it was here, then there. I watched it bounce around for at least a full half hour, it wasn't a satellite or a meteor.