65s, OESD on turn in small pot.

[Groendal]

Party Poker 1/2 Hold'em (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is BB with 5[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">4 folds</font>, MP3 calls, <font color="#666666">2 folds</font>, SB completes, Hero checks.

Flop: (3 SB) A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, MP3 checks.

Turn: (1.50 BB) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, Hero ?

I stopped thinking, but figured my odds werent good enough.
I need to put in 2 to win 5. 2.5:1.

Also take into account that a re raise could happen.
Is there any implied odds to count if one or both have a ace, and i hit my straight?