pl 50 flopped straight with tough turn decision.

[PokerFun007]

Table is super loose with 40% of players seeing the flop.

PokerStars Pot-Limit Hold'em, $0.50 BB (9 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($9.25)
Hero ($45.75)
BB ($6.50)
UTG ($29.55)
UTG+1 ($33.90)
MP1 ($48.25)
MP2 ($69.30)
MP3 ($117.85)
CO ($15.45)

Preflop: Hero is SB with 5[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls $0.50, MP2 calls $0.50, MP3 calls $0.50, <font color="#666666">1 fold</font>, Button calls $0.50, Hero completes, BB checks.

Flop: ($3) 3[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(6 players)</font>
Hero checks, BB checks, MP1 checks, <font color="#CC3333">MP2 bets $2.85</font>, <font color="#CC3333">MP3 raises to $5.7</font>, <font color="#CC3333">Button raises to $8.75</font>, <font color="#CC3333">Hero raises to $15</font>, BB folds, MP1 folds, MP2 folds, MP3 calls $9.30.

Turn: ($44.60) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">MP3 raises to $57.4</font>, Hero ?

I hate this turn card, but with the size of the pot, can I get away from this? I made the $5 bet as a blocker and seem to have been told that I'm beat...what to do? I have about $25 behind at this point.