400nl KQ vs unknown, put in a raise somewhere?

[Suwalski]

I just deleted my entire db and this is my first session for a week or so. Should i put in a raise here somewhere?

Party Poker, $2/$4 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

Hero (BTN): $601.48
SB: $103.60
BB: $190.54
UTG: $137.30
MP: $404
CO: $303.58

Pre-Flop: K[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/spade.gif[/img] dealt to Hero (BTN)
2 folds, CO checks, <font color="red">Hero raises to $20</font>, 2 folds, CO calls $16

Flop: ($38) 8[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">CO bets $40</font>, Hero calls $40

Turn: ($118) 5[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">CO bets $40</font>, Hero calls $40

River: ($198) J[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">CO bets $40</font>, Hero calls $40

[EasyAs1-2-3]

Hm, dont know what to make of the pot-sized donk bet. I'd raise it up on the flop as that board is soaking wet. As played those tiny turn and river bets look like a made flush betting for value, maybe even trying to induce you to read weakness and shove over top.