Are Ghosts Following Me?

This all started happening when I was about 10 years old. I slept over at my grandmother's house once and I slept in the downstairs living room. In the middle of the night, I awoke to the sound of footsteps in the hallway and a sound of a wheelchair being rolled around in the hallway and kitchen. This went on for 30 minutes or so, then the hall closet door opened and closed and I didn't hear anything else.

On a different occasion I went over to my grandmother's house to baby sit my younger cousin. I put him in his room upstairs for a nap in the afternoon and I went down and listened to music on the computer. I got up and walked by the garage door in the hallway and it was opened, which is strange because I hadn't gone out there. I figured my cousin had so I closed the door. I went to the kitchen to get some water came back down the hall and the garage door was open again, so I closed it and went and sat back down at the computer listening to my music, which was pretty loud I might add. All of a sudden I hear the door opening and then slamming shut repeatedly. I went into the hall way and no one was there but the door was opening and closing. I ran upstairs, woke up my cousin and stayed outside.

A year or two later I was at my house in my room sleeping in my bed. The door to my bedroom was open and the hall light was on, so my room wasn't dark at all. Our house made a lot of noises especially when you're walking, you can hear where everyone is in the house by the way the floor creaks. So, as I was sleeping, I was awoken and I heard footsteps in the living room (which is next to my bedroom) and I figured my mom had gotten up and was in the living room. I keep hearing these footsteps and they get closer and closer and then I hear them in the hall. Now my bedroom door is wide open and I can see down the hall and the light is on, no one is there. Then I hear footsteps at the doorway in my room right inside my bedroom. But I cannot see anyone. I'm pretty scared at this point. Then I hear the floor creak right next to my bed as if someone stepped closer. All of a sudden I feel weight on my feet like someone is sitting there, and within seconds, someone or something is tucking my blankets around my legs like a mother or grandmother would do. I freak out and start kicking frantically the weight lifts off my legs... And I don't hear anything...

My sister said she sees an older lady in our room sitting in a rocking chair at night and the lady stares at her while she's sleeping.

I'm 19 now and this still freaks me out.