Basically the board came to Jd Jd Qs

And the river... 7d ...

and my opponent bet me a good amount on the turn. I had a read on him and pretty much knew he didn't have the Jacks so I called all in. He called with just the pair of Qs and won. I had nothing.

Did I make a good bluff or a bad bluff?

Before then I was checking then calling him.