This is getting more serious..

Okay so, my house is started to really act haunted. First it started with the black fog "thing" in my hallway (I had a story on that) and now it's this.
First, this could just be my moms imagination, but she was home alone and she heard the door open and keys rattling. So she thought my dad was home early! So she went to check, and no one was there. This really freaked her out.


And then, this is my more serious experience.

I was on the phone with my friend, and I was in my parents bedroom. (I have always had a creepy feeling in there.) And my mom was in the kitchen doing dishes, and my dad was in the living room watching TV. And all of a sudden, the closed bedroom door sounded like someone was scratching it, trying to get in. Then, there was two very quiet knocks. I just stood there, staring for a second. Then I slowly opened the door, and no one was there. I asked my parents if they heard anything, and they didn't.


Recently, nothing else has happened, but these things didn't happen very long ago. At all. So I'm kind of just waiting..


And my friend is sorta a ghost expert, and he thinks it's a poltergeist. And I believe so too.

But do you have any suggestions on how to rid of it, or keep it from attacking me in the future if that's possible?

I would greatly appreciate it(:

-Thank you!