[Closed] NL20 - Low flush

Hand converted with online PokerStrategy.com hand converter:

$0.1/$0.2 No-Limit Hold'em (8 handed)

Known players:
[tg]CO$19.94:///////;BU$2.20:///////;SB(Hero)$6.37:///////;BB$20.44:///////;UTG2$3.83:///////;MP1$16.98:///////;MP2$19.90:///////;MP3$7.22:///////;[/tg]
Preflop: Hero is SB with 5:c, 4:c.
6 folds, Hero calls $0.10, BB checks.

Flop: ($0.40) 2:c, 3:c, 9:c (2 players)
Hero bets $0.40, BB calls $0.40.

Turn: ($1.20) J:c (2 players)
Hero bets $1.00, BB calls $1.00.

River: ($3.20) 5:s (2 players)
Hero checks, BB bets $1.60, Hero folds, BB gets uncalled bet back.

Final Pot: $3.20.

I think probably I should have just folded pre-flop, but once I hit the flush, did I play it ok? Once he called on the turn I was fairly sure that he must have a club.