Perfect time to raise and fold to a 3-bet?

[kurosh]

Party Poker 10/20 Hold'em (6 max, 6 handed) converter

Preflop: Hero is CO with A[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/diamond.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, UTG calls.

Flop: (5.50 SB) 3[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, Hero calls.

Turn: (4.75 BB) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, Hero checks.

River: (4.75 BB) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, <font color="#CC3333">Hero raises</font> planning on folding to a 3-bet.

I just sat down at the table one orbit ago.

[ISF]

Not sure I like folding to a threebet without a read. He woudnt threebet Q9 A3 here, or if he is loose Q3? I could see all of those hands played this way by some opponents. I would also fold the flop to certain opponents. Any PT stats here?

[kurosh]

Nope. I have 8 hands on him. I think the most likely hands for him are either a flush or a pair.