NL50: flushdraw how to play?

[BetYourLife]

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) by Hand Converter CG

saw flop|<font color="#C00000">saw showdown</font>

UTG ($109.80)
UTG+1 ($39.15)
MP1 ($49.10)
MP2 ($94.20)
MP3 ($11.20)
CO ($66.55)
Button ($35.75)
SB ($53.40)
Hero ($49.75)

Preflop: Hero is BB with 4[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/club.gif[/img].
UTG calls $0.50, UTG+1 folds, MP1 folds, MP2 folds, MP3 folds, CO calls $0.50, Button folds, SB folds, Hero checks.

Flop: ($1.75) T[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $1</font>, UTG calls $1, <font color="#CC3333">CO raises to $4.5</font>, Hero calls $3.50, UTG folds.

Turn: ($11.75) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $8</font>, Hero folds.

Final Pot: $19.75
<font color="#009B00">Main Pot: $11.75, won by CO.</font>
<font color="#009B00">Pot 2: $8, returned to CO.</font>

what to do oop against 2 villains? bet out and call a raise or just c/c?
river bet was too huge and because of not so high implied odds i folded here.