99, should I fold it on the turn?

[igbr1]

Party Poker 1.00/2.00 Hold'em <font color="#0000FF">(10 handed)</font> link

Preflop: Hero is CO with 9[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/club.gif[/img].
<font color="#666666">6 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 folds</font>, SB calls, BB calls.

Flop: (6.00 SB) 6[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets</font>, SB folds, BB calls.

Turn: (4.00 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, Hero calls.

River: (8.00 BB) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

Final Pot: 8.00 BB.