I would like to start off saying that this post is NOT a lie, fib, exaggeration, etc. This is my own experience, and if you are skeptic, read this (or don't, I don't care).
I've had my own hit with a ghostly encounter before. Only once, though. I am not an expert on what happened, since it was awhile ago (end of 2014), and I cannot remember every single detail pertaining to it.
It was around 11 o'clock in the morning, a Sunday most likely, and I was in my room. I had an unusual headache that day, which it only hurt on the front part of my head. Not around my head, temples, anything. Just the front section (where the eyebrows and nose are). I decided to take a nap, so I closed my eyes. It didn't even feel like five minutes before I opened my eyes and felt someone staring at me from behind.
I've always felt a presence staring, so it wasn't unusual, but I still wasn't used to it. I sat up and looked around my room, seeing a closed door (and of course it was locked, thanks to me). I decided to lay down, close my eyes again, and huddle closer to my wall. That's where I usual sleep... Closest to the wall.
I felt a smack, maybe a punch, in the middle of my face/forehead. I opened my eyes quickly, viewing the white wall I saw two seconds ago. The smack/punch felt like one of those red, rubber dodgeballs from Gym class. It felt like there was an imprint on my face, which there wasn't, and it worried me. I also heard it hit me in the face.
Thankfully, I moved, but I still feel the presence around whenever I'm alone. Maybe I'm overthinking things, but it was weird. No one could have done it, and I'm intent on that since my door was locked and I was FACING the wall. (Sorry this was so short!)