There is a possibility it is psychological.
From a Catholic perspective there is something you can do that will effect spiritual influence if that is what it is. (If your not Catholic, this is a hindrance on it’s own.) Move more to religious devotion in your life. As you do, favors are more likely to be granted. Nothing provokes more these wayward spirits more than degrees of religious determination. (sometimes lack of religious devotion is the cause.)
Start saying sincere rosary. Place religious items in the rooms. (The Holy Mother is especially detested by them, and it makes them uncomfortable to be in proximity to items that are her likeness). Have a priest bless the house and rooms if possible. Get holy water and sprinkle it around your room. Especially, on a regular bases go to confession and receive communion after. Go to mass. Continue and don’t stop.
If what you are experiencing is psychological then it shouldn’t get worse. Otherwise, be prepared for even stranger outcomes.
One caveat. Whatever you do, do not try to establish communication with them even if you think it’s a deceased relative. No seances or ouijia boards, pentagrams and so on. These will diminish the graces that you possess that prevents things from getting worse now. The only thing that will work is what you do for yourself. And as I said, self improvement improves your friendship with God and St. Michael who will always come out the winner.
Let us know what happens. We’ll take it from there.