wasted boat

[chopchoi]

I'm SB with J [img]/images/graemlins/spade.gif[/img] 5 [img]/images/graemlins/spade.gif[/img]. 3 limpers, I complete, BB checks.

Flop: 5 [img]/images/graemlins/heart.gif[/img] 5 [img]/images/graemlins/club.gif[/img] J [img]/images/graemlins/heart.gif[/img]. It checks around.

Turn: K [img]/images/graemlins/heart.gif[/img]. I figure this card might have helped someone, so I check again, and it checks around again.

River: 3 [img]/images/graemlins/heart.gif[/img]. My mouse is on the slider, ready to bet, but then I thought "No way in hell they let it check around on every street." So I check again, and no one bets.

Did I mis-play, or did I just get unlucky? Also, if I should have bet, on which street?