50nl the nuts, bad spot to call on turn?

[rothko]

got raised on turn and took the if-i-call-then-check-river-villain-will-bet-big-and-then-i'll-raise line. flush hits on the river and villain checks behind. obviously i suck. i should be raising the turn to protect myself against the flush and get more money in the pot, correct? what do i raise it to, $7? even though the flush hits i should still bet the river, right? villain's line doesn't look like a flush draw and i'm missing value by checking, correct?

PokerStars No-Limit Hold'em, $0.50 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($49.50)
UTG ($39)
UTG+1 ($56.55)
MP1 ($17)
MP2 ($22.95)
CO ($47.90)
Button ($23.35)
Hero ($24.05)

Preflop: Hero is SB with J[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
UTG calls $0.50, <font color="#666666">2 folds</font>, MP2 calls $0.50, <font color="#666666">2 folds</font>, Hero completes, BB checks.

Flop: ($2) K[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, UTG checks, MP2 checks.

Turn: ($2) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $1</font>, <font color="#CC3333">BB raises to $2.5</font>, UTG folds, MP2 folds, Hero calls $1.50.

River: ($7) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, BB?