river play

Hand converted with online PokerStrategy.com hand converter:

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$0.1/$0.25 No-Limit Hold'em (6 handed)

Known players:
[tg]BU (Hero)$24.65:///////;SB$26.59:///////;BB$25.55:///////;MP2$12.85:///////;MP3$27.10:///////;CO$24.65:///////;[/tg]

Preflop: Hero is BU with A:d, 4:s.
3 folds, Hero raises to $0.50, SB folds, BB calls $0.25.

Flop: ($1.1) 5:s, 2:h, T:s (2 players)
BB checks, Hero bets $0.80, BB calls $0.80.

Turn: ($2.7) A:s (2 players)
BB checks, Hero checks.

River: ($2.7) 6:h (2 players)
BB checks, Hero bets $1.10, BB raises to $5.90, Hero folds, BB gets uncalled bet back.

Final Pot: $3.8.

he is unknown.

I bet since I wanted to get some value from Tx,but got check raised.
I think if he had flush,he would bet on the river,so it looks like bluff,but I folded,
was it okey?