How to play on 3 suited boards?

[drywater]

I have no reads about the opponents. I probably played it too timidly. How would you guys play this hand?
I was in SB.

No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $174.40
BB: $138.97
UTG: $138.52
MP: $105.50
CO: $65.36
BTN: $98.50

<font color="black">Preflop:</font> is dealt (6 Players)
2 folds, CO calls $1.00, BTN folds, SB calls $0.50, BB checks

<font color="black">Flop:</font> ($3) 3[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/spade.gif[/img] (3 Players)
<font color="red">SB bets $3.00</font>, BB folds, <font color="red">CO raises to $10.00</font>, SB calls $7.00

<font color="black">Turn:</font> ($23) K (2 Players)
SB checks, CO checks

<font color="black">River:</font> ($23) 4 (2 Players)
<font color="red">SB bets $10.00</font>, CO folds

Pot Size: $33.00