Combo draw, over pot bet, my action?

[Briman51]

Playing $.12/$.25 NL 6 max on pacific poker. I've been quite aggressive so far and have played with villain in a couple of sessions in the past few days, my 99 out ran his AA just before this hand on a different table.

Villain is a tight player (for a six max table). He's 35/10/2.6.

Seat 1: BB (Villain) ( $30.14 )
Seat 2: UTG ( $24.06 )
Seat 3: UTG+1 ( $11.58 )
Seat 4: <font color="red"> Hero </font> ( $20.97 )
Seat 5: Button ( $23.69 )
Seat 8: SB ( $14.83 )

** Dealing down cards **
Dealt to <font color="red"> Hero </font> [ T [img]/images/graemlins/spade.gif[/img] 7 [img]/images/graemlins/club.gif[/img] ]
UTG folds.
UTG+1 folds.
<font color="red"> Hero </font> raises [$0.9].
Button calls [$0.9].
SB calls [$0.78].
Villain calls [$0.65].
** Dealing Flop ($3.50) ** [ 9 [img]/images/graemlins/spade.gif[/img], 8 [img]/images/graemlins/spade.gif[/img], 3 [img]/images/graemlins/spade.gif[/img] ]
SB checks.
Villain bets [$5].
<font color="red"> Hero </font> ???

Apart from the obvious advice of "fold preflop". What's my play here?