NL100: Combo line check

[spike13]

BB runs at 29/13/1. Seems like a typical station.

I usually make flop 10. Not sure what happened here.
Anyone check this turn in position?
Would a river bet be too thin?

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($100.85)
SB ($30.80)
BB ($103.45)
UTG ($95.50)
Hero ($185.90)
CO ($109.50)

Preflop: Hero is MP with 6[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $4</font>, <font color="#666666">2 folds</font>, SB calls $3.50, BB calls $3.

Flop: ($12) 7[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets $8</font>, SB folds, BB calls $8.

Turn: ($28) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $20</font>, BB calls $20.

River: ($68) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero?