Welcome!
Sleeping, technically, is not wrong.
Fornicating, that is different--by Elder in a Kingdom Hall standard. And your own.
However, unless you want to tell the Elders, in great detail what you did, I would tell then to F-off. They are a group of dirty old men who will ask you to tell them step-by-step, detail-by-detail, exactly what you and your guy did. They seem to get off on the details.
So, unless you are willing to give them a pornographers wet-dream of a detailed list, I would not tell them a thing and tell them it is none of their business.
That is just my opinion. Experienced opinion.