Lost on the turn

[ISF]

Both opponents are a bit laggish, but I dont have any specific notes, and cant remeber anything out of line from either. The turn raise certainly doesnt have to mean more then an ace, but I cant imagine the double check raise isnt at least a set. Is this an easy fold, or are my two pair outs combined with gutshot ours enough to make it a call.
Party Poker 10/20 Hold'em (6 max, 6 handed) converter

Preflop: Hero is BB with Q[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Button raises</font>, SB calls, <font color="#CC3333">Hero 3-bets</font>, Button calls, SB calls.

Flop: (9 SB) J[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, Button calls, <font color="#CC3333">SB raises</font>, Hero calls, Button calls.

Turn: (7.50 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, <font color="#CC3333">SB 3-bets</font>, Hero folds.

Final Pot: 13.50 BB

[bds]

I think you made a good fold. It's a fold I'd like to recognize the need to make more often.