50 nl - TPTK vs preflop raiser

[Willd]

I haven't played cash for a while so I apologise is this is fairly standard or I played it horribly or something.

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($50)
CO ($16.80)
Button ($15)
SB ($49.50)
BB ($21.50)
UTG ($57.45)

Preflop: Hero is MP with Q[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">UTG raises to $2</font>, Hero calls $2, <font color="#666666">4 folds</font>.

Flop: ($4.75) Q[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $4</font>, Hero calls $4.

Turn: ($12.75) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $10</font>, Hero calls $10.

River: ($32.75) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $18</font>, Hero ?