Haunting? Advice Please

So this is some experiences that I have experienced.

I am 15 and since I am a teenager I know that many will discount my story, but I promise you everything I am about to write is 100% true. I am looking for any possible explanations and advice that you have to offer.

I have been living in my current home since I was two years old. There was no previous owners and the land was undeveloped swamp, as much was in Florida. The house is a two story, when you walk into the door the garage is to your left and living room is to your right. In front of you is the stair case which has a large window situated on the landing and then across from that is the formal dining room, which is filled with furniture of my deceased grandparents. As you walk farther into the house you come to the kitchen/laundry room and a small glass cabinet we use as a shrine you could say to my deceased grandparents. In the back of the house in the master bedroom, family room and the place where we eat, then a door leading out to the back patio and yard.

Not many experiences have happened downstairs but there have been a few. One night I was going to sleep in my parents room and I was just staring at the door frame. A feeling that someone was watching me was really strong. Suddenly I was a shadow on the wall and I could have sworn I saw a shadowy head peak around the door. This may have been due to lack of sleep as I am usually still awake at odd hours and am the only one awake most of the night. Another time me and my sister were home alone and the lights would dim and come back every 10 seconds or so. We live in a largely populated area and I called my friends to see if they were having any problems and they all explained they were not. You can constantly hear footsteps upstairs and once or twice I have heard them descending the stairs. Another experience happened to my sister, my parents were in their room getting ready to go out and we were watching some television, my dogs were looking out the back door and barking. They are small dogs and have a tendency to bark at small things. So we thought nothing of it, until my sister finally got up to take a look and jumped back, turning to me to explain she had seen a face looking back at her. Then there are the usual things, such as things falling, moving places, etc.

Upstairs is where almost all the occurrences have taken place. As I said before there is a large window positioned above the landing as you ascend the stair. You then come to a small loft area and to your left is a guest room, to the right is my own room, then farther on to the left is the "office" which is a mostly empty space with a couch, in the center is my sisters room, and to the right is a bathroom.

I have always felt uneasy in the left corner of the landing, the guest room, and the office. It may be because these rooms are rarely used and somewhat bare, but in the guest room there is a bathroom and walk in closet and I cannot shake the feeling of someone watching me the entire time. The office is always cold even though the upstairs is always extremely hot. Nothing has really happened in either of those rooms to the point where I am convinced there is a haunting. But on account of my mother she once had an experience where she could feel an angry presence in the left corner of the landing one night, at the time when we first moved in. I have heard what sounds like human voices upstairs late at night and constantly feel uneasy when up there alone.

It is always brought up in family gatherings about how much I love to talk, and one of the most repeated things is how I would always talk no matter if anyone was listening, apparently I would carry out full conversations with myself. My family, except for my mom who even then is skeptical, does not at all believe in the paranormal. On multiple occasions I have seen shadow figures and I have even called out to my deceased grandparents asking them that if it was them to please keep the occurrences at a minimum or at least let me know it was them. Neither has occurred.

There is one experience that I will never forget. I was about 7 or 8 and my dog would sitting under the stairs and staring up at the banister that bordered the loft. He would not stop barking. Finally, my father asked me to please go see what he was barking at, as I peered under to look I screamed and jerked back, because I was certain that I had seen a man peering back at me with dark eyes. As everyone came running over we realized that it was a piece of clothing someone had left hanging over the banister. BUT I know what I saw and I am certain that it was not the clothing. There was a time when my mother, sister, and I came home and there was so much noise coming from upstairs that my mother proceeded to grab the small hand gun and race up the stairs, finding nothing.

This is all I can recall at the moment. I am sure there were some other not as strong occurrences.

As a side not my sister and I have found soda cans while digging in the yard, and at one point my sister found a dollar bill in the attic, possibly from building?

Sorry this was all over the place as I am trying to get all my thoughts down before my laptop dies. Please if you have any possible explanations or advice please let me know, as I would greatly appreciate it.

Thank you,

IatlianBella99