Playing with a big draw?

[Toonces]

10/20 Live game at Potawatomi.

Hero is UTG+1 with Q[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/club.gif[/img] Callers are mostly loose, and of average aggression (say a 50% VPIP and 4% PFR).

UTG folds. Hero calls. UTG+2 calls. MP1 calls. MP2 calls. MP3 raises. CO folds. Button folds. Blinds call. All limpers call.

Flop is J[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/club.gif[/img]. (14 SB)

Blinds check. Hero bets. UTG+2 calls. MP1 folds. MP2 raises. All fold to Hero. Hero calls. UTG+2 calls.

Turn is 5[img]/images/graemlins/heart.gif[/img] (10 BB)

Hero checks. UTG+2 checks. MP2 bets. Hero calls. UTG+2 folds.

River is 9[img]/images/graemlins/heart.gif[/img] (12 BB)

Hero ???

Should I have reraised on the flop, scaring away UTG+2? Should I bluff on this river? Any other ideas?