Classic 3 AM spookiness! Keep in mind, psychological effects (hello placebo!) can make things scarier. Recommend trimming to the mundane before jumping to the ghostly, but sounds like your house got something goin on either way!
Classic signs of a stalker entity, pal. Your cat is picking up on it, trust your pet. Have you played with any Ouija boards lately or visited places that are rumored to be haunted? Sometimes acknowledging the presence of whatever’s stalking you gives it power. Try ignoring it, act like …