Is it all in my head???

I kept hearing this tapping noise and I thought it was my brother doing that so I punched my wall and I heard him say "What the fuck was that?" and I said to myself 'bitch don't act like you weren't doing that.'
Now I'm thinking, 'was it him or was it all in my head??'

Also, a week ago I think, I was in my room laying on my bed and using my phone. The lights were off and then I hear this knocking noise and at first I ignored it but it did it again (it did it like 3 times in a row). I freaked a bit to be honest so I got up, turned on my lamp, and I went to my mom and dad's room. My dad was just there laying on his bed. I go back to my room, until I saw my mom sitting on the floor atop of the stairs (she gave me a mini heart attack) I asked her if she was doing that knocking noise and she said no. ._. Wtf???