100NL - did I get myself into trouble with trip kings?

[brutalBeater]

No reads on villain.
I was wondering if I have gotten myself into trouble by not 3 betting the flop or betting the turn bigger.
As played, should I call the river?

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
6 players
Converter

Stack sizes:
UTG: $100
UTG+1: $103.65
CO: $95
Hero: $164.30
SB: $77.70
BB: $139.90

Pre-flop: (6 players) Hero is Button with A[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/club.gif[/img]
3 folds, <font color="#cc0000">Hero raises to $3.5</font>, SB calls, BB folds.

Flop: K[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img] ($8, 2 players)
SB checks, <font color="#cc0000">Hero bets $5</font>, <font color="#cc0000">SB raises to $12</font>, Hero calls.

Turn: 5[img]/images/graemlins/diamond.gif[/img] ($32, 2 players)
SB checks, <font color="#cc0000">Hero bets $18</font>, SB calls.

River: Q[img]/images/graemlins/diamond.gif[/img] ($68, 2 players)
<font color="#cc0000">SB is all-in $44.2</font>, Hero ???

[thePiranha]

I Call here most times depending on villian.

[redCashion]

I call, if you're beat you're beat.

[cbboy]

Bet more on turn.

[Lucky]

get it in on turn.

Raising flop is fine also, you build pot if he has KQ/KJ so all money for sure goes in. Also, if he's bluffing on flop, he's done anyway, unless you know he'll fire again on turn.