How bad is this?

[Bubsy27]

Party Poker
No Limit Holdem Ring game
Blinds: $0.25/$0.50
5 players
Converter

Stack sizes:
UTG: $15.85
CO: $23.80
Button: $55.92
Hero: $49.50
BB: $65.44

Pre-flop: (5 players) Hero is SB with Q[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/spade.gif[/img]
UTG, folds, CO (poster) checks, Button folds, <font color="#cc0000">Hero raises to $2.5</font>, BB folds, <font color="#cc0000">CO raises to $4.5</font>, Hero calls.

Flop: 8[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/heart.gif[/img] ($9.5, 2 players)
Hero checks, <font color="#cc0000">CO bets $0.5</font>, Hero calls.

Turn: 3[img]/images/graemlins/heart.gif[/img] ($10.5, 2 players)
Hero checks, <font color="#cc0000">CO bets $1.5</font>, Hero calls.

River: A[img]/images/graemlins/club.gif[/img] ($13.5, 2 players)
<font color="#cc0000">Hero bets $9</font>, <font color="#cc0000">CO raises all-in $17.8</font>, Hero calls.

Results:
Final pot: $49.1

No stats on villain
IS the flop call terrible?
And is it Ok up until the 'value bet on the river?'
What hands is he calling with that I beat?