The bishop should absolutely keep it confidential. You can ask him outright if he intends to before you talk to him.
That said, feeling the spirit is tricky for me, too. At one point I realized I'd been feeling the spirit and didn't even know that's what it was. I try to be in tune to it, but I don't pretend to be the best. Based on outcome, I think my decisions are based on guidance from the spirit even if I can't key into the specific time the thought came to me. I act in faith and I believe He guides me as long as I do. I believe that more because of the times I've been punched in the face by the spirit for not following.