I'm new to the table, no reads.

Relevant stacks:
Hero $49
CO $66

Preflop: Hero is BB with 8[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, CO calls, 1 fold, SB completes, Hero checks.

Flop: ($1.50) T[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero bets 3, CO raises to 6, SB folds, Hero???

What's the plan here?