Sorry this happened to you.

Next time, if you want to reset the latest commit to an unstaged state:

  git reset HEAD~

But regarding "deleting all my recent changes", another command I'd like to introduce you to is;

  git reflog

It shows you all of your commits that changed the tip (HEAD). Chances are your changes could be found there.

I don't blame you for not knowing this. I learned by trial and error and most importantly, good colleagues who showed me the way.

edit: Typo/grammar