Will my acceptance get revoked?

I submitted my college essay to GradeSaver and they accepted it. This was an essay I wrote for Early Action for 2018 application. They accepted me early action, but I haven't confirmed/denied the acceptance yet; however, I realized my fatal mistake afterwards because the school may now think that I copied an essay and may revoke my acceptance. I am fearing for my future since this is the only school I'm accepted to.

What should I do? Thank you.