QQ against big bet on the river

[ahlee]

Full Tilt No-Limit Hold'em, $0.10 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($9.55)
Button ($3.50)
SB ($7.90)
BB ($10.05)
Hero ($7.35)

Preflop: Hero is UTG with Q[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">Hero raises to $0.3</font>, <font color="#666666">2 folds</font>, SB calls $0.25, BB calls $0.20.

Flop: ($0.90) 7[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, Hero checks.

Turn: ($0.90) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, Hero checks.

River: ($0.90) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">BB bets $2.1</font>, Hero calls $2.10, SB folds.

Final Pot: $5.10

Hi,

this is the firts hand im postin. I have no reads on m opponent. Should I have bet on the flop to see where I am at ?
The big bet on the river smelled fishy... so I called.