tptk vs 3rd flush card on turn

villains stats are 48/0 i think calling on turn wasn't bad but river worries me. advice on all streets appreciated ty

PokerStars No-Limit Hold'em, $0.10 BB (5 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

BB ($9.45)
<font color="#C00000">UTG ($12.80)</font>
MP ($21.75)
Button ($6.40)
<font color="#C00000">Hero ($10.95)</font>

Preflop: Hero is SB with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
UTG calls $0.10, <font color="#666666">1 fold</font>, Button calls $0.10, <font color="#CC3333">Hero raises to $0.5</font>, <font color="#666666">1 fold</font>, UTG calls $0.40, Button calls $0.40.

Flop: ($1.60) K[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $1</font>, UTG calls $1, Button folds.

Turn: ($3.60) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets $1</font>, Hero calls $1.

River: ($5.60) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets $2.1</font>, Hero calls $2.10.

Final Pot: $9.80
<font color="#009B00">Main Pot: $9.80, between UTG and Hero.</font>