Is there a demon or some kind of spirit in my house? PLEASE be serious!?

First let me start out by saying i used to see my gaurdian angels when I was younger, I stopped around age 3 and couldn't see them anymore, I don't remember seeing any of them but I'll go and ask some family members and they all have the exact same story, so yes, I used to see my 3 guardian angels. I always have an eerie feeling in my house, it got so bad I had to switch my room because the feeling got so strong. The vibe mostly came from my bathroom, I felt like there was a portal or something, so my step mom believes in all the paranormal stuff so she decided to switch my room and bathroom with my brothers,. My cat meows at nothing and freaks out at the wall, my mom sees ghosts of loved ones that passed away, I'm a Christian but I'm not obsessive with religion, I don't watch scary movies, read scary stories, dint go in haunted houses or on hayrides during Halloween, I HATE scary! I get a huge negative energy all the time, even after i switched rooms i still get that feeling that im being watched, i lay up at night just staring at the roof because i feel like if i close my eyes something will happen, I have nightmares, not often but I still do, and they usually involve the people that I live with in that house, even though I share a room with my 2 younger dusters I still CAN'T feel secure, What could it be?