50nl, set of 5s, how's my line?

[swainy]

villian is 45/0/0.4 over a mere 20 hands. thats my only read. i had been quite active with vpip of ~30.

nothing too out of the ordinary here, i just want to know how i did.

Poker Stars, $0.25/$0.50 NL Hold'em Cash Game, 7 Players
LegoPoker Hand History Converter

UTG+1: $28.25
MP: $70.45
CO: $80.05
BTN: $51.45
SB: $38
BB: $49.15
Hero (UTG): $72.60

Pre-Flop: 5[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] dealt to Hero (UTG)
<font color="red">Hero raises to $2</font>, UTG+1 calls $2, 5 folds

Flop: ($4.75) 8[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $3</font>, UTG+1 calls $3

Turn: ($10.75) 9[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $7</font>, UTG+1 calls $7

River: ($24.75) Q[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $12</font>

How's my line here?

The 9 of hearts was a bad card, making the straight and the flush, so im not too excited about his call.

Would anyone play the river different? At that point i thought i might be beaten, but i didnt want to check and face an all in, although i might well call....