Having confusion and can’t think properly

So I got hurt at work yesterday. A bunch of boxes fell on my head. Since yesterday After the incident happen I kept repeating the same thing to my sister when I was having a conversation with her and today I went to file a incident report at work and went to the wrong door and I knew it’s said exit but my head wasn’t registering it properly. I just stood in front reading the do not exit as if the door is open. Once I registered it was the entrance I walk to the exit door and the door open.

My question is something wrong with me. I honestly think my head isn’t functioning right. I’m not slow and I know this isn’t normal for me. This is stressing me out