Hi Neirin, I can see why you might think it's dissociation, it's certainly got elements of that in there I think...........perhaps check out/put a thread in, the dissociation forum to get a bit more feedback.......but definitely talk to a professional about it too.
What's happening needn't be "scary", there is help out there, you're not going to be the only one to have these symptoms, and people have been helped..........just obviously we can't diagnose on here..........so please talk to someone professional about it.
Of course that's not to say you can't still get emotional support and maybe a bit of practical advise on here too of course.

Alison