Possible misplay of flopped trip queens

[Downrock]

No read on button, but my initial feeling is that he is 3 betting with AK AQ etc. When the river comes down for whatever reason i start fearing KK. I'm thinking I should have just pushed through on this one the whole way. Thoughts?

Paradise Poker 1/2 Hold'em (9 handed) converter

Preflop: Hero is UTG+1 with Q[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">4 folds</font>, <font color="#CC3333">Button 3-bets</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero caps</font>, Button calls.

Flop: (9.50 SB) A[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, Hero calls.

Turn: (5.75 BB) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">Button 3-bets</font>, <font color="#CC3333">Hero caps</font>, Button calls.

River: (13.75 BB) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, Hero calls.

Final Pot: 15.75 BB