Getting away from the not-nut flush

[Azrael_AOD]

Game is $10 no-limit- blinds are $0.10 and $0.20. The game is 8-handed.

Preflop: ($0.30)I'm in the big-blind with Q [img]/images/graemlins/club.gif[/img] 10 [img]/images/graemlins/club.gif[/img]. UTG folds, UTG+1 folds, MP1 folds, MP2 calls, CO folds, Button calls, SB completes, I raise to $1.20 (everybody looked weak). MP1 folds, Button calls, SB folds.

Flop: ($2.80) 4 [img]/images/graemlins/diamond.gif[/img], 8 [img]/images/graemlins/club.gif[/img], J [img]/images/graemlins/club.gif[/img]. Now I've got the flush draw and gut-shot draw to the nut straight. I bet $3.50 and the button calls.

Turn: ($9.80) 3 [img]/images/graemlins/club.gif[/img]. I check, the button bets $1.00, I raise to $6.00 and he calls.

River: ($21.80) K [img]/images/graemlins/spade.gif[/img]. I go all in for $26.30, and the button calls. He's got the nuts- A [img]/images/graemlins/club.gif[/img] 9 [img]/images/graemlins/club.gif[/img].

I've gone over it at least a dozen times in my head and I don't know how I could have gotten away from that beat, short of going all-in on the flop. The button is a really weak player so I'm not even sure if he would have folded to an all-in on the flop. How much of a dog am I if I've got a flush+gutshot draw against the nut flush draw?

Any comments would be greatly appreciated.