How to calm down when stuff goes into slow motion but you're moving way too fast?

[O_Brian]

I don't know if this is the right place to ask (I don't have any diagnosis) and sorry about the confusing question.

When I'm very stressed or scared - especially when concentrating very hard, like in an exam for example - sometimes everything around me slows down and I can't move my hands fast enough. I get this weird voice, it's like this female news reporter sort of thing, but it's not like a hallucination as I can control it. It's just in my head and it tends to just comment on the things around me sort of in my subconscious (stuff like, 'You need to hurry up' or really dumb general statements like 'It's really warm').

This usually happens at the same time, when all the stuff around me slows down and my mind feels like it's moving way too quickly like it's going to burn up. It gets really frustrating and I start panicking and go all sweaty and dizzy because it feels like my body is moving too slowly and I can't control it or make it speed up to the same pace as my thoughts, so my mind and body feel like separate things and it's really scary.

This tends to last for mo more than a couple of hours and I've never tried speaking when it happens, I just find somewhere quiet and sit there.

Like I said, I've never talked to a professional about it because it was never frequent enough to be an issue but I have some big exams coming up and I don't want something stupid like this to screw me over. If anyone has any tips on how to overcome this sort of thing please say xx
Also apologies if this makes no sense, I don't really know how to explain this sort of thing.

[Paxiled]

Are you an anxious person generally?  Do you often have irrational fears?  Trying to see if you're a person who has anxious thoughts a lot, because if you are this could be a symptom of it.