NFD and Trips 3 way big pot

[irunnotgood]

Full Tilt Poker
Pot Limit Omaha Ring game
Blinds: $0.50/$1
6 players
Converter

Pre-flop: (6 players) Hero is UTG+1 with :ad :jh :kd :6h
UTG folds, [color=#cc0000]Hero raises to $3.5</font>, CO calls, Button folds, SB calls, BB folds.

Flop: :6d :3d :tc ($11.5, 3 players)
SB checks, Hero checks, [color=#cc0000]CO bets $11.5</font>, SB calls, Hero calls.

Turn: :6c ($46, 3 players)
SB checks, Hero checks, [color=#cc0000]CO bets $46</font>, [color=#cc0000]SB raises all-in $169.85</font>, Hero

Both villains seem loose possibly aggro over 30 or so hands. I probably butchered this hand on every street. Is c/c the flop bad here?