KK OOP, overcard on flop -- turn play?

[Phyreball]

New to table, no reads.

PokerStars No-Limit Hold'em, $0.25 BB (5 handed) CP hand converter

Hero ($26.95)
MP ($24.65)
Button ($34.20)
SB ($9.65)
BB ($8.05)

Preflop: Hero is UTG with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Hero raises to $1</font>, <font color="#666666">1 fold</font>, Button calls $1, <font color="#666666">2 folds</font>.

Flop: ($2.35) A[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $1.75</font>, Button calls $1.75.

Turn: ($5.85) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $1.75</font>, Hero?