$25NL Nut flush draw vs action

[Dr_Jeckyl_00]

Preflop I think this was fine to raise. On the flop I figured I was 3:1 to call, and if one or more of the others called then odds would be correct to call, but then one guy raised and now I'm getting around 6:1 to call. So this hand just seemed to get out of control and commit me at every turn. Did I play it terribly? One guy called me a flush chaser, I thought I played it right, and of course I kept my mouth shut. Please comments on all streets.

PokerStars No-Limit Hold'em, $0.25 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG+1 ($4.25)
MP1 ($14.50)
Hero ($39.60)
MP3 ($24.15)
CO ($15)
Button ($63.05)
SB ($27.55)
BB ($18.50)
UTG ($12.55)

Preflop: Hero is MP2 with 7[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img]. CO posts a blind of $0.25.
UTG calls $0.25, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $1.75</font>, <font color="#666666">1 fold</font>, CO (poster) calls $1.50, Button calls $1.75, <font color="#666666">1 fold</font>, BB calls $1.50, UTG folds.

Flop: ($7.35) 9[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, Hero checks, <font color="#CC3333">CO bets $2</font>, Button calls $2, <font color="#CC3333">BB raises to $6.25</font>, Hero calls $6.25, <font color="#CC3333">CO raises to $13.25</font>, Button folds, BB calls $7, Hero calls $7.

Turn: ($49.10) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $3.75</font>, BB calls $3.50 (All-In).

River: ($56.10) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players, 1 all-in)</font>

Final Pot: $56.35