Three to a flush on the flop..now what?

[ajm36]

I see situations similar to this every day. Good flop hand and three to a flush hits the flop. Do you bet or check/call? In this situation I'm behind two straights, pocket 7's and a made flush. Were my betting/raising decisions correct?

Party Poker 1/2 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is SB with 5[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img]. CO posts a blind of $1.
UTG calls, <font color="#666666">1 fold</font>, UTG+2 calls, <font color="#666666">3 folds</font>, CO (poster) checks, Button calls, Hero completes, BB checks.

Flop: (6 SB) 7[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, UTG calls, UTG+2 folds, CO folds, Button calls, <font color="#CC3333">Hero 3-bets</font>, BB calls, UTG calls, Button calls.

Turn: (9 BB) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, UTG calls, Button calls.

River: (13 BB) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, UTG calls, Button folds.