Scary psychic experience. HELP Can anyone tell me what it is and what it means?

[seo1]

The evening of the fourth I had just gotten back from the gym with my sister and we were eating at the kitchen table. As I was talking to her all of a sudden I got that feeling you get when someone is coming up behind you quickly, when you can sense their presence. It felt very strong. Then at that same instant a mental picture came into my mind of a man I didn't recognize. I could sense he wasn't good. He was running towards me with his arms stretched out like he wanted to grab me. It was so vivid that I guess I couldn't tell the difference between the vision and my actual dinner conversation because I turned around quickly and cried out. As I turn around my sister gives me this look like "WTF is up with you?" lol. It kind of freaked me out. At low points during my life I could sense a similar bad presence. One time I actually heard it respond to a command of mine telling it to leave me alone. My sister who may have a little ability herself says that sometimes she does sense a bad presence in my room and the back area of our house. I'm not sure if it's related to our house or not. I think it's attracted to me whatever it is because I've experienced it in another place too. Any ideas of what that was in the kitchen and whether it could be related to the other experiences?

I'm kind of scared to go back to my house. Since then I've been at my cousin's and my mom's. It may sound kind of ghey but I'm kinda freaked.