I'm creeped out. Boss stood right behind me and stared at me hard

I made eye contact with him and he stared at me. Next thing i know he's standing right behind me with a cord in his hand just staring. Didnt know how long he was there but i turned and saw him behind me. I said oh i didnt see you there and he didnt say a word just stared at me. Wtf.....

Admittedly ive been out of it all morning. I slept like crap and dont feel good. Stomach is queasy and i feel like dying