10/20 SH TPTK vs turn action

[Pinga]

SB is 34/11 and has been playing well.
BB is 17/11 and has played so few hands as to be unremarkable.
I am 41/13 and have been running very well for the session.

Party Poker 10/20 Hold'em (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Pinga is Button with A[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Pinga raises</font>, <font color="#CC3333">SB 3-bets</font>, BB calls, <font color="#CC3333">Pinga caps</font>, SB calls, BB calls.

Flop: (12 SB) 9[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, <font color="#CC3333">Pinga bets</font>, SB calls, BB calls.

Turn: (7.50 BB) J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, Pinga calls, <font color="#CC3333">SB raises</font>, BB calls, Pinga calls.

River: (13.50 BB) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, Pinga folds, SB calls.

Final Pot: 15.50 BB

I felt ok with the fold on the river, but I'm not thrilled with the turn action.

Opponents action on the turn looks like J9/JQ catching two pair, KT hitting the straight, or a spade draw.

Should I have raised the turn? Fold to a reraise or call along?

Do people feel the river fold is standard or should I call it down?

I don't think BB is betting here unless he could beat one pair.