nl100 99 3way flop

[bottomset]

new to the table, no reads

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 7 Players - (LegoPoker HH Converter)

<u>SB: $106</u>
BB: $24
UTG: $20.35
UTG+1: $87.35
MP: $57.85
<font color="black">Hero (CO): $100.80</font>
<u>BTN: $44.25</u>

<font color="black">Preflop:</font> Hero is dealt 9[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] (7 Players)
3 folds, <font color="red">Hero raises to $3.50</font>, BTN calls $3.50, SB calls $3, BB folds

<font color="black">Flop:</font> ($11.50) 2[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/heart.gif[/img] (3 Players)
SB checks, <font color="red">Hero bets $9</font>, <font color="red">BTN raises to $24</font>, SB calls $24, Hero???

what's my plan here?

BTN only has ~17 left

BTN likely has some sort of 1pair hand hand, given the timing of SB's call its likely he has a draw, possibly a big hand like a set that he decided to c/c before the action got to him

most draws have a ton of outs here though