Should I turn my hand into a bluff?

[HelixTrix]

Due to recent history/stats etc. I felt villain might be 4-betting light here. Is it best to push or fold? His flop check is interesting. Worth a bet on turn?

Full Tilt No-Limit Hold'em, $2 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($200)
MP ($71.45)
CO (Villain) ($401.75)
Button ($200)
Hero ($227.10)
BB ($247.55)

Preflop: Hero is SB with 9[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">CO (Villain) raises to $7</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $26</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">CO (Villain) raises to $68</font>, Hero calls $42.

Flop: ($146) 2[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Villain checks.

Turn: ($146) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero ?