Wiped out all PM conversations by mistake

I was trying to make room in my inbox to recieve PMs and somehow managed to clear out all of my personal messages by mistake instead of the two I was trying to. Can they be restored? There are contacts, references, and other important information in a couple of them that I don't want to lose.

If one of the import ones was with me I still got it all if you need any of it. Other than that I’m not sure how to fix it.