$50NL Nut flush on paired board. Turn/ river plan, please.

[bobbyi]

I don't know the relevant opponent. I'm unsure of what my turn/ river plan should be here. Was checking the turn a mistake? If so, what should my plan have been? Given that I chose to check, what should I do on the river?

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed)

CO ($18.54)
Button ($35.26)
Hero ($70.94)
BB ($71.90)
UTG ($26.75)
MP ($45.55)

Preflop: Hero is SB with A/images/graemlins/diamond.gif, 2/images/graemlins/diamond.gif.
<font color="#666666">1 fold</font>, MP calls $0.50, <font color="#666666">1 fold</font>, Button calls $0.50, Hero completes, BB checks.

Flop: ($2) 5/images/graemlins/diamond.gif, K/images/graemlins/diamond.gif, Q/images/graemlins/heart.gif <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $1.25</font>, <font color="#CC3333">BB raises to $2.5</font>, MP folds, Button folds, Hero calls $1.25.

Turn: ($7) Q/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
Hero checks, BB checks.

River: ($7) A/images/graemlins/spade.gif <font color="#0000FF">(2 players)</font>

[orange]

I generally play drawing hands OOP fairly passively on the flop (c/c-ing). Playing a drawing hand OOP against villan who controls the betting is hell.

I lead the turn here for $6 and value bet the river.

What was your plan if the turn blanks? c/c a reasonable bet? c/f?

[BigBiceps]

bet the turn ...

bet the river ...

It does not seem like he has a full house here, based on the preflop action.

If he raises you like 50 bucks or something you probably have to fold though.

[bobbyi]

What happens if he raises the turn or river? What's the most you will call?