Wiped out all PM conversations by mistake

If you go into your messages they get stored in the deleted messages area.
WINNER!!
Thank you. It was right there in front of my face. Never noticed the TRASH folder under the Inbox before. Seems you have to confirm you want to rejoin each one to see what's in it, but they are still there.

Thanks to all. Looks like I averted a small disaster, large inconvenience.