I'm not one who has a very strong belief in ghosts but my family has had past experiences like light flickering before the death of my uncle and having an negative energy that gifted people pick up.
I was at school participating in sports inside the hall and it was around 10am. The opposite team hit the ball out so I went to get it but then I felt someone touch or grab my shoulder. I didn't feel them pull away or remove their hand or any like wind or cold air, just as if someone was to grab me. I'm a jumpy person so I obviously jumped and turned right around to find no one. It was impossible for one of my team members to walk up grab my shoulder and get back to their position. I was really creeped out about it and it was on my mind for while.
In the last period (2pm) I went to grab my pencil case from outside. As I went to open the door I felt the same thing, again no one was there and everyone was sitting at their tables completing work.
Does this mean anything? What should I do? Barely anyone has passed in my life apart from my uncle but I was like 2 months old. The only paranormal experience I've ever experienced was a weird shadow in my house (no, our house isn't haunted or old). It was a like a weird sensation as if someone was there and I saw like a black shadow the corner of my eye but I turned around and no one was there, it may seem like anxiety but at times the feeling would be so strong it would have been impossible to just be my mind. It got to the stage I was scared to be left home alone. What does this all mean?