FR NL2 QTs

Should I re-raise pre flop, possibility for flush on turn, should I played slower and just call?

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.01/$0.02 No-Limit Hold'em (9 handed)

Known players:
[tg]BU$2.70:///////;SB$2.00:///////;BB (Hero)$2.00:///////;UTG1$2.00:///////;UTG2$3.22:///////;MP1$1.82:///////;MP2$4.60:///////;MP3$2.19:///////;CO$1.90:///////;[/tg]

Preflop: Hero is BB with Q:s, T:s.
5 folds, CO calls $0.02, 2 folds, Hero checks.

Flop: ($0.05) J:h, 8:h, 7:d (2 players)
Hero bets $0.08, CO calls $0.08.

Turn: ($0.21) 9:h (2 players)
Hero bets $0.20, CO raises to $0.40, Hero raises to $1.90, CO calls $1.40(All-In).

River: ($3.91) 2:s (2 players)

Final Pot: $3.91.
Results follow:

Hero shows a straight, queen high(Q:s T:s).
CO shows a flush, king high(3:h K:h).

CO wins with a flush, king high(3:h K:h).