Lost And Confused. Psychic Or Psycho?

I'm new to this site, and I don't really know a lot about psychics or anything about psychic powers so If some of these things aren't psychic, I'm sorry. Any help as to if I'm psychic or crazy would be greatly appreciated.

I can close my eyes and automatically tell where everyone is in the house. And if they are sitting, standing, reading or doing a puzzle etc.

I spent a lot of time at my grandparent's house when I was little. I never felt quite alone there even when I was I always felt that someone was watching me. Sometimes at night I would see a shadow pacing around the foot of my bed or standing at my door. This only happened at my grandparents house. I remember quite clearly one time I was at my grandparents alone after school. I was about 6 or 7 at the time waiting for my dad to pick me up and I heard a male voice call out my name. It wasn't my dad's and it didn't sound like anyone else that I know. This happened a lot when I was at their house alone. It scared me after a while so I ignored it and one day it screamed "Fine!". But it didn't sound normal that time it sounded like something I can't even describe. That was the last time I heard it. And I never saw the shadows in my room at night after that.

Some times I can predict things in my dreams or sometimes even during the day for example. One night I dreamt that in the yard one gate was left open. A gate no one ever uses, was left slightly open the wind blew it wide open and the dogs almost got out. A couple of days later when I got home I re-remembered the dream vividly and it was overwhelming. So I went to check the gate surely enough the gate was ever so slightly open. Then a big wind came and I had to run to close it before the dogs got out just as in the dream. This also happened with my dog almost getting run over and other events as well.

I'm not really sure how to say this next have healed headaches and stuff like that just by concentrating and closing my eyes. Then there is this dark and light stuff. As I get rid of the dark stuff and replace it with light headache disappears. I have done it to other people as well as myself both with the same results.

Other things: I have had all of those abilities all of my life or at least as long as I can remember. I have always had a great interest in astronomy the stars, the moon, nature, and the paranormal ever since I was little. Even thought my parents STRONGLY do not believe in paranormal things but I have always felt a weird pull towards it all. I have always been the outsider the one that just doesn't fit in. Sometimes the lights flicker or just turn off when I'm in the room then about 30 seconds later turn back on. This does not just happen at home it happens other places too. Plus, I sometimes get this feeling that something big is going to happen but, nothing does. Then later the feeling returns again. Also I rarely ever get sick even if there is a huge flu going around.

Again sorry if these things arnt psychic. I don't know much about psychics or psychic powers. But I need to know, am I nuts or am I psychic?