NL player switching to 6max limit

PokerStars 1/2 Hold'em (6 handed) converter

Preflop: Hero is SB with J[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, <font color="#CC3333">CO raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">1 fold</font>, UTG calls, CO calls.

Flop: (10 SB) Q[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, UTG folds, <font color="#CC3333">CO raises</font>, Hero calls.

Turn: (7 BB) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, Hero folds.

Final Pot: 8 BB

Should I have folded the flop or should I just get to showdown with this hand?