NL10 - Continue aggression? 4straight on board

[Jw513]

No strong reads, but villain does not seem to be out of line.

Full Tilt No-Limit Hold'em, $0.10 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($12.05)
Button ($8.35)
Hero ($10.05)
BB ($11.20)
UTG ($16.05)
MP ($19.70)

Preflop: Hero is SB with J, A.
UTG raises to $0.35</font>, 2 folds</font>, Button calls $0.35, Hero calls $0.30, 1 fold</font>.

Flop: ($1.15) J, 9, 7 (3 players)</font>
Hero checks, UTG bets $0.75</font>, Button calls $0.75, Hero raises to $2.7</font>, UTG calls $1.95, Button folds.

Turn: ($7.30) T 2 players)</font>
Hero ???

How's my flop line? I wanted to c/r to find out where I'm at. I think he has something like QQ. Should I keep firing turn? If I do, I think my hand will turn into a bluff. Thoughts?