Are These Ghosts?

I have seen different things since I was really little first started as seeing shadows then turns into seeing people and faces. I also get strange feelings in different places like I was being watched or that something was trying to touch me though once I actually had my shoulder, that I was leaning on, pushed out from under me in front of my best friend with tremendous force. The shoulder incident happened after I saw a little girl in a nightgown from around the 1920s, wide grin with sharp teeth, and blood dripping from her mouth that would chase me in the dark. I know this sounds like a dream but it isn't I can promise you. Along with the little girl I kept seeing red eyes peaking out from under my bed at me like I was their prey and all of this happened when I was staying at my grandmother's house. Before these incidents I always saw a large pure black solid shadow standing in the doorways just staring at me though I felt safe in it's presence. All I would see was a black shadow and nothing else, but I could tell it was a bald man in his late 20s and that he was staring at me as if he was watching over me to protect me. He disappeared before the incidents but showed back up afterwards and when he showed back up the eyes and little girl never came back. After that I continued to see people that weren't there and then started to seemingly hear other people's thoughts. Does anyone have an idea why this is happening to me? As an add on my best friend has similar happenings too.