Firing all barrels...

[blackaces13]

Is it worth it?

PP .5/1 no info on opponent.

I have J [img]/images/graemlins/spade.gif[/img]T [img]/images/graemlins/spade.gif[/img] in ep
I call, 7 folds, SB raises, BB folds, I call

FLOP: 7[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/club.gif[/img] (2 players, 2.5 BBs)
SB bets, I raise, SB calls.

TURN: 4[img]/images/graemlins/heart.gif[/img] (2 players, 4.5 BBs)
SB checks, I bet, SB calls.

RIVER: A [img]/images/graemlins/diamond.gif[/img] (2 players, 6BBs)
SB checks, I bet again...

OK line vs an unknown or spewing?