Have you tried clicking on the "edit" tab on the top and clicking on "undo"- I use Mac so if you have a Windows computer it might be a different term, but will have that function too.
I think that only works straight away after you make the mistake, if you did other things in between, it probably can't be undone. Sorry, I'm just not computer savvy enough to tell you if you could ever get the text back now. Hopefully you'll find a solution.
I think that only works straight away after you make the mistake, if you did other things in between, it probably can't be undone. Sorry, I'm just not computer savvy enough to tell you if you could ever get the text back now. Hopefully you'll find a solution.