what do i do to get it of my mind?

so me and my sister (who came back) were scrolling threw instagram when we came across a video that said sensitive content. we decided to watch it. that was a mistake. what i saw was a man being killed and ripped open. i cant stop thinking about it because the man never died even if they opened him. this is infact disturbing (something i would never post on my page) and i cant get it off my mind. ive been trying to think of other things but the thought keeps coming back.