my last hand ... 4 handed short stack but not < 10xBB

[Tim H]

Button (t211055.50) - in every hand at this point, calling most bets to river (most bets have been &lt; 10k though)
SB (t111591) - he will let you know how big a piece of the board he has
Hero (t59533)
UTG (t81320)

Preflop: Hero is BB with 7d, 4h.
1 fold, Button calls t3000, SB Completes, Hero checks.

Flopt9800) 6d, 7h, 5d (3 players)
Hero bets t12000,Button calls t12000, SB folds

After hand I was thinking I should of checked here

Turnt33800) 6s (2 players)

Hero ??