Turn decision with a double gutshot.

[hemstock]

PokerStars 1/2 Hold'em (5 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with 6[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, MP calls, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (3 SB) 7[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, MP checks.

Turn: (1.50 BB) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, <font color="#CC3333">MP bets</font>, SB folds, Hero calls.

I do this a lot. Whenever I have a flush draw, an OESD or a double gutshot I don't take in consideration the pot size often enough. For example here, the pot is just 2bb but I do have a double gutshot. Anyone else do this? Should these hands be easy folds?