Semi-common situation with K7s

[istewart]

5-handed $1/2.

CO posts a blind. Folded to him and he checks. He's unknown to me.

Folded to me in the SB and I raise K [img]/images/graemlins/club.gif[/img]7 [img]/images/graemlins/club.gif[/img]. BB folds and CO calls.

Flop K [img]/images/graemlins/heart.gif[/img]9 [img]/images/graemlins/heart.gif[/img]Q [img]/images/graemlins/diamond.gif[/img]. I bet and he raises. I call with no real plan for the hand.

I'm fairly sure I should've 3-bet here, what do you think? If you had just called like I did, what is your plan for the hand?