JJ in a large multiway pot

[chesterfieldking]

Whole table is unknown, this is my 3rd hand after sitting down.

PokerStars 2/4 Hold'em (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is Button with J[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, MP calls, CO calls, <font color="#CC3333">Hero raises</font>, SB calls, BB calls, <font color="#CC3333">MP 3-bets</font>, CO calls, <font color="#CC3333">Hero caps</font>, SB calls, BB calls, MP calls, CO calls.

Flop: (20 SB) 3[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, BB checks, <font color="#CC3333">MP bets</font>, CO calls, <font color="#CC3333">Hero raises</font>, SB folds, BB calls, MP calls, CO calls.

Turn: (14 BB) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, MP checks, CO checks, <font color="#CC3333">Hero bets</font>, BB folds, MP calls, CO calls.

River: (17 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
MP checks, CO checks, Hero checks.

Final Pot: 17 BB

The main questions are should I be capping this pf and did I miss a value bet on the river? I am assuming flop and turn are standard.