KK oop, 1/3 pot turn bet...

[BG1124]

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $1/$2
5 players
Converter

Stack sizes:
UTG: $104.70
CO: $237.10
Button: $267
SB: $75
Hero: $207.15

Pre-flop: (5 players) Hero is BB with K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img]
UTG folds, CO calls, 2 folds, 2 folds, <font color="#cc0000">Hero raises to $10</font>, CO calls.

Flop: A[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/club.gif[/img] ($21, 2 players)
<font color="#cc0000">Hero bets $20</font>, <font color="#cc0000">CO raises to $40</font>, Hero calls.

Turn: Q[img]/images/graemlins/spade.gif[/img] ($101, 2 players)
Hero checks, <font color="#cc0000">CO bets $30</font>, Hero??....

No read on villain, 2nd hand at table... Fold seems like the obvious answer but i think villain has A w/ a low kicker....thoughts/comments on next move are appreciated