KQ tough river spot

[PokerGia]

Played just a few hands so no reads except for
MP who has been betting $1-$2 on .08$ pots
last few hands; here im trying to get a pair and
check raise him

Poker Stars, $0.01/$0.02 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

Hero (BB): $2.87
UTG: $7.07
MP: $3.06
CO: $4.92
BTN: $2.06
SB: $2.18

Pre-Flop: Q[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/spade.gif[/img] dealt to Hero (BB)
UTG calls $0.02, MP calls $0.02, CO calls $0.02, 2 folds, Hero checks

Flop: ($0.09) Q[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/heart.gif[/img] (4 Players)
Hero checks, UTG checks, MP checks, <font color="red">CO bets $0.04</font>, Hero calls $0.04, UTG calls $0.04, MP calls $0.04

Turn: ($0.25) J[img]/images/graemlins/club.gif[/img] (4 Players)
Hero checks, UTG checks, MP checks, <font color="red">CO bets $0.10</font>, <font color="red">Hero raises to $0.30</font>, UTG folds, MP calls $0.30, CO calls $0.20

River: ($1.15) K[img]/images/graemlins/club.gif[/img] (3 Players)
Hero checks, <font color="red">MP bets $0.22</font>, <font color="red">CO raises to $2</font>, Hero ???