You have to prove it is yours.
Is this your original post on facebook here? If that is yourself, you can easily login to that facebook account and leave a link back to this article and to your steemit blog.. Mark it - VERIFICATION FOR STEEMIT or something similar.
Then contact the flaggers who have done this to you - they are called @steemcleaners ... If you plagiarised, you know that we also have our strict rules now.. You can respond to all of this in #report-plagiarism in our server and we will guide you at poestunited.
RE: KNOW WHEN TO MOVE ON....