NL50 T9s turns trips with 3rd flush card (3way)

[Parvex]

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($47.65)
CO ($59.65)
Button ($97.50)
SB ($82.35)
Hero ($50)
UTG ($46.25)

Preflop: Hero is BB with 9[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $2</font>, <font color="#666666">2 folds</font>, SB calls $1.75, Hero calls $1.50.

Flop: ($6) 8[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $3.5</font>, MP calls $3.50, SB calls $3.50.

Turn: ($16.50) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets $3</font>, Hero ???

SB is a 70/2/0.9 station (45hands)
MP is 20/15/1 (20 hands, so not say anything)

Is the possibilty that both opponents hold less than a made flush big enough to make this a protection raise or should we just call for our FH odds?