Yeah, only one.
I was about 12, my grandad had passed away recently prior to this. All the windows in the house were shut, I was the last one to come upstairs.
I was in the upstairs hallway heading into my bedroom (straight ahead at the end of the hallway) when I felt this sudden urge to just run. This feeling of danger just overcame me within a split second and I just darted into my room, slamming the bedroom door shut behind me. I felt safe.
Skip forward a minute or two, as I was getting into bed, I felt the same feeling again. Terrified as I was. I huddled into the corner of my bed. Then i heard something slam into my door as if someone had run into it. I stayed deathly still for a good 5 mins, plucking up the courage to check. Nothing there.
I ran into my mums bedroom and told her what happened, she didn't believe me and told me to get back to bed. So I decided to sleep in a different bedroom. Just so I could hear the stuff around me I left the door open.
I was sitting up in this huge double bed with the duvet over everywhere but my eyes. I left the outside light on too. Just as I was starting to feel sleepy I saw something black (like a shadow) flicker in the hallway. I froze and immediately thought about running into my mums room. I shouted her a few times and she started to get out of bed, but she opened her door and stayed at her doorway asking what it was. We both saw the same thing at this point.
My bedroom door opened ever so slightly, then FORCIBLY shut HALFWAY. As if someone used all their force to slam the door and stopped halfway. Then the same thing happened. I heard my mum shout my name and then my bedroom door opened WIDE, then SLAM shut. My mum shouted me again asking if that was me and I screamed "no".
TL;DR: chased by ghost.