Should I have called this flop?

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Party Poker 0.5/1 Hold'em (10 handed) converter

Preflop: Hero is CO with Q[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, UTG+2 calls, MP1 calls, <font color="#666666">1 fold</font>, MP3 calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, BB calls, UTG calls, UTG+2 calls, MP1 calls, MP3 calls.

Flop: (12.50 SB) 4[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, UTG+2 folds, MP1 folds, MP3 folds, Hero calls, BB calls.

Turn: (7.75 BB) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, <font color="#CC3333">Hero raises</font>, BB folds, UTG calls.

River: (11.75 BB) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, UTG calls.

Final Pot: 13.75 BB


Looking back on this the next day I'm not sure if I like this call on the flop with so many in preflop. What do you think?