Spirits Getting My Attention?

I am a 14 year old boy. When I was younger I was extremely interested in psychic experiences and psychic related things when I suddenly started having extremely creepy experiences. I remember sleeping and I woke up and I saw a dark silhouettes about 3 meters away. This scared me but I somehow managed to get back to sleep. I woke up and there was a force pushing me down. After that I remeber a sort of vision almost when I was in the shower, of a man and he was filling up with liquid and was then dying. For a while I stopped getting into medium or paranormal related things. Until recently my grandma was crying as it was the date of her twin sisters death. And every time I walked into my room my cupboard would open and most of the time right after my grandma would be walking past my room when this happened. And I remember one night I was sleeping and I woke up and I drifted back to sleep when my legs literally flew into my wall and so did my blanket. It felt like someone was pushing my legs and I went back to sleep and after that while I was asleep I remember hearing some one saying," Don't worry I'm here." And just the other night I remember it felt like someone was rocking my bed and I heard like a sort of shuffle when I woke up. Some times I hear someone calling me when no one else is in the house. But like everyone else I'm sure this is just my imagination. At night I usually sleep late at night but before I sleep I usually watch tv or YouTube but normally when I watch YouTube I'm interrupted by a knocking on my door and I open my door but no one is there. So I don't know if a spirit is trying to contact me or if multiple are or if it is just me? Please if anyone knows please tell me I will be extremely greatful.