[Closed] NL5 - flush on paired board

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.02/$0.05 No-Limit Hold'em (6 handed)

Known players:
[tg]SB$5.09:///////;BB (Hero)$5.30:///////;MP2$6.38:///////;MP3$6.36:///////;CO$5.00:///////;BU$16.10:///////;[/tg]

Preflop: Hero is BB with 9:h, T:h.
2 folds, CO raises to $0.17, BU calls $0.17, SB calls $0.15, Hero calls $0.12.

Flop: ($0.68) J:c, J:h, Q:h (4 players)
SB bets $0.60, Hero calls $0.60, CO calls $0.60, BU folds.

Turn: ($2.48) 3:h (3 players)
SB bets $1.98, Hero calls $1.98, CO calls $1.98.

River: ($8.42) T:d (3 players)
SB bets $2.34, Hero calls $2.34, CO calls $2.25.

Final Pot: $15.35.

Results follow:

CO shows a full-house, queens full of jacks(Qd Qc).
SB shows three of a kind, jacks(Ad Js).
Hero shows a flush, queen high(9h Th).

CO wins with a full-house, queens full of jacks(Qd Qc).
Hero wins with a flush, queen high(9h Th).

Playing against 2 my flush is often beat by a full house, but I don't see at what point I can fold this hand.