Some other textbook manifestations are things like: hearing other people in the house calling your name when they are gone, asleep, or insist they did not call your name. Hearing your own name being called. dogs barking, pigs snorting, birds singing out of season and off hours. objects disappearing (and sometimes reappearing later) objects moving. Sudden cold spots in an area of the house. Feeling very cold in general and not being able to get warm (this is called by the Warrens and others the "psychic cold" and is evidence that a demonic attachment is drawing energy from you, it will be an unexplainable cold, if a hot shower and a mean room temperature of at least 70F doesn't remedy it, then you have a VERY bad case of this). Feeling like you're being watched. visual or auditory manifestations in general, can be tailored to the individual to maximize fear, hatred, or paranoia. a lot of mutterings like distant chattering, a distant TV where you cannot make out the words. The list goes on, if you can provide more information I would be grateful.
I've experienced a lot of demonic activity, and I know you might not want to hear this because I was an atheist for most of my life and would have none of it, but if you have not already read the Gospel you will find in it Christ Jesus tells us all about demons and gives us authority over them in His name. Demonic manifestations around here has all but dried up completely since I gave them to Him, they especially hate praise and worship, it's like demon repellent.