Is there a demon in my house?

My boyfriend and I were arguing and we just went to sleep it off because it wasn’t too serious and i woke up and he was still asleep so i went in the living room to play sims on my computer and about 3 hours later he came out and said he had a crazy dream about a demon possession and that a girl was walking away from us and she stopped and turned her head in a full circle and was straight up talking a different language

anyways so now about an hour after that we are sitting on the couch and he looks down and notices three scratches on his arm ... with a bruise next to them... and he works in a factory and wears a big hoodie all day so it didn’t happen there... and we were arguing so we weren’t rough housing or anything... and i know demons like to scratch in threes to mock the holy trinity..