KQs, flop overcards. Missplayed?

[Lmn55d]

I think I like my flop bet on this one. On the turn, I picked up a gutshot and it was headsup so I thought I'd bet again (bad?). With the gutshot and unclean overcards the call of the turnraise seemed fine. Now onto the river. Is my bet here bad? How bout my call of his raise?

Party Poker 2/4 Hold'em (6 handed)

Preflop: Hero is SB with Q/images/graemlins/diamond.gif, K/images/graemlins/diamond.gif.
<font color="666666">2 folds</font>, CO calls, Button calls, <font color="CC3333">Hero raises</font>, <font color="666666">1 fold</font>, CO calls, Button calls.

Flop: (7 SB) 4/images/graemlins/heart.gif, 5/images/graemlins/spade.gif, J/images/graemlins/club.gif <font color="blue">(3 players)</font>
<font color="CC3333">Hero bets</font>, CO folds, Button calls.

Turn: (4.50 BB) 9/images/graemlins/heart.gif <font color="blue">(2 players)</font>
<font color="CC3333">Hero bets</font>, <font color="CC3333">Button raises</font>, Hero calls.

River: (8.50 BB) K/images/graemlins/heart.gif <font color="blue">(2 players)</font>
<font color="CC3333">Hero bets</font>, <font color="CC3333">Button raises</font>, Hero calls.

Final Pot: 12.50 BB
<font color="green">Main Pot: 12.50 BB, between Button and Hero.</font>

[StellarWind]

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