Does anyone else get anxious before work ends?

Just the last hour or so before I finish work I always start feeling really anxious and tense. I think it might be due to worrying and getting up and leaving and whether my boss thinks I am leaving early or something. As well as having to say goodbye as I leave as I find it hard to do small talk.

I dunno I'm not actually diagnosed with anxiety so I don't know if this is a real thing. But every day I get like this and I feel abnormal.