22$ - difficult bubble hand

[sence25]

Full Tilt Poker No-Limit Hold'em Tourney, Big Blind is t400 (4 handed) Hand History converter Courtesy of PokerZion.com

UTG (t580)
Button (t1440)
Hero (t4550)
BB (t6930)

Preflop: Hero is SB with 4[[img]/images/graemlins/diamond.gif[/img]], 5[[img]/images/graemlins/club.gif[/img]].
[color=Gray]2 folds</font>, Hero completes, BB checks.

Flop: (t800) 9[[img]/images/graemlins/club.gif[/img]], 7[[img]/images/graemlins/heart.gif[/img]], 4[[img]/images/graemlins/heart.gif[/img]] [color=Blue](2 players)</font>
[color=Red]Hero bets t400</font>, BB calls t400.

Turn: (t1600) 4[[img]/images/graemlins/club.gif[/img]] [color=Blue](2 players)</font>
[color=Red]Hero bets t900</font>, BB calls t900.

River: (t3400) T[[img]/images/graemlins/spade.gif[/img]] [color=Blue](2 players)</font>
Hero checks, [color=Red]BB bets t5230 (All-In)</font>, Hero folds.

Final Pot: t8630

In retrospective, i hate my turnbet.
Should have just called it down.
Is the riverfold too anxious?

I hate to bubble here - but the pot is very big.
I know i should have bet bigger on the flop, but i wanted to keep the pot small/take it down right there.