Mepark saidthat's definitely a little bug my friend.
I have screens on all my windows. There is no way for anything to get inside..and we had a freeze not to long ago...most of the flying bugs are dead this time of year.
its definitely a disturbed spirit of someone who was murdered in your house. its probably going to kill you in your sleep in the near future.
i built the home myself 7 years ago...there has never been a home here...the only thing we dug up when we dug the foundation was some old horse bones...Appalousa horses were originally bred here and they were the sole permanent inhabitants of the rolling hill of the Palouse region of Idaho/Washington.
if that makes you feel better... for now...
Perhaps the creepiest thing is that I decided to leave the cam recording all night...just like on Paranormal Activity to see if anything happened while I slept. Over 8 hours of me sleeping...playing with myself in my sleep...but nothing interesting.