good fold here?

[pokahpaul]

Party Poker 2/4 Hold'em (8 handed) converter

Preflop: Hero is CO with K[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, BB calls, MP1 calls.

Flop: (6.50 SB) 7[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, MP1 checks, <font color="#CC3333">Hero bets</font>, BB calls, MP1 folds.

Turn: (4.25 BB) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, Hero folds.

Final Pot: 7.25 BB

first orbit, fifth hand, but BB has played 4 out of 5 hands
any thoughts on what BB could have? is this a good fold?