Page Spread has takdn over my screen and the cursor has disappeared

[Michelle250891248jgx]

 I really don't know what or how l have done this, but the screen suddenly switched to the double page spread taking over my whole screen, with no 'x' anywhere to downsize it and my cursor has disappeared.

My tablet is a touch screen so I have tried using two fingers to shrink the screen but all it did was shrink the page size?

I am suddenly stuck!

And have tried lots of things to get out of it but I had done some work on the document before this suddenly happened and don't want to close my laptop down and lose it all!

[Michelle250891248jgx]

OK- update is  I've had to shut down my tablet and restart it. When l opened Indesign again, the same wide page was still there BUT it had become smaller so that l was still able to access the bar at the top where it wasn't like it normally us but DID have a highlighted button saying to end 'touchscreen' option. (Oh and I had to reapply the cursor option when I restarted my tablet as it really had disappeared).

This shrinking slightly of the dominant screen meant I was able to undo the touchscreen option.

So two things please for Adobe:

1) I still have NO idea how I'd turned the touchscreen option on

And 

2) until I shut down my laptop I really was stuck ad the screen covered the 'undo touchscreen' button leaving me unable to so anything.

Many thanks (and apologies about the spelling mistakes!)