Good turn fold?

[GSummers]

Hi guys. I just started playing for real money after screwing around with play money for a while. Be gentle.


PokerStars 0.02/0.04 Hold'em (9 handed) converter

Preflop: Hero is UTG+1 with Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img]. CO posts a blind of $0.03.
<font color="#666666">1 fold</font>, Hero calls, MP1 calls, <font color="#666666">2 folds</font>, CO (poster) checks, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: (5.50 SB) 2[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, BB checks, Hero checks, <font color="#CC3333">MP1 bets</font>, CO calls, SB calls, BB calls, Hero calls.

Turn: (5.25 BB) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">SB bets</font>, BB folds, Hero folds?

Table was loose passive preflop.

I called the flop feeling I have odds to chase overs/bd straight. I just wasn't sure about the turn. Presumably when SB bets out the turn helped him, and now I feel like my overcard outs are a little dodgier. Plus it might get raised behind me by the flop bettor. Is this reasoning sound?