QQ got my heart racing

[AtlBrvs4Life]

Just played this hand on a very loose NL 25 6-max table. I'm not sure if I played it well and wasn't sure about the correct course of action on the turn. I decided to check behind because a check raise would have made me sick and I still had 10 outs to beat the straight. On the other hand, I was giving the flush the free card. Opinions?

Party Poker No-Limit Hold'em, $0.50 BB (6 max, 6 handed)

SB ($24.60)
BB ($25.85)
UTG ($108.49)
MP ($8.40)
Hero ($45.83)
Button ($20)

Preflop: Hero is CO with Q[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
UTG calls $0.50, MP calls $0.50, <font color="CC3333">Hero raises to $2.5</font>, Button calls $2.50, SB folds, BB calls $2, UTG calls $2, MP folds.

Flop: ($10.75) Q[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="blue">(4 players)</font>
<font color="CC3333">BB bets $4</font>, UTG calls $4, <font color="CC3333">Hero raises to $20</font>, Button folds, BB calls $16, UTG calls $16.

Turn: ($70.75) 9[img]/images/graemlins/heart.gif[/img] <font color="blue">(3 players)</font>
BB checks, UTG checks, Hero checks.

River: ($70.75) 9[img]/images/graemlins/diamond.gif[/img] <font color="blue">(3 players)</font>
<font color="CC3333">BB bets $3.35 (All-In)</font>, UTG folds, Hero calls $3.35.

Final Pot: $77.45

Results in white below: <font color="white">
BB shows Ad Qd (two pair, queens and nines).
Hero shows Qh Qs (full house, queens full of nines).
UTG said he had king high flush draw.
Outcome: Hero wins $77.45. </font>