How to explain this!! and has anyone else experienced this?

I have been very stressed out, distraught over various things this week, have recently been getting a lot of dissociation episodes over the past few weeks, world not real, like being in a film, toys cars in car parks, things are blurry, looking down on things, colour drained out, have told my support person not in as much detail in between my weekly therapy sessions except there wasn't one this week but recently when watching TV or trying to read a book I am becoming these people the things that are happening has or are happening to me, does that make sense. 

Should I  be concerned??? 

hope this makes some sense or someone can relate.