Help me play my JJ

[Dr_Doctr]

Could someone evaluate my play with an overpair here on all streets please and if I'm making mistakes tell me what I should be doing and why - or what factors I should be taking into consideration. I think playing overpairs is one of the weakest parts of my game.

6 players - Effective 50 - Hero is Lag - Villian seems like a Tag - Hero is button with J [img]/images/graemlins/club.gif[/img], J [img]/images/graemlins/diamond.gif[/img]

Folded to Hero, Hero raises 2, SB raises 7, BB folds, Hero calls.

Flop (14)

7 [img]/images/graemlins/heart.gif[/img], 9 [img]/images/graemlins/heart.gif[/img], 5 [img]/images/graemlins/club.gif[/img]

SB bets 9, Hero calls

Turn (32)

7 [img]/images/graemlins/club.gif[/img]

SB checks, Hero bets 17 (this is a strange bet - I wanted to induce a possible bluff-shove from overcards (unlikely) while at the same time protecting my hand - if I just shoved I would lose out on this small possibility - I didn't give too much consideration to the two hearts on board in a reraised pot), SB calls.

River (64)

3 [img]/images/graemlins/heart.gif[/img]

SB pushes for about 20, Hero calls - Not happy at all about him pushing the river but I can't fold right? Should I be shoving the flop, shoving the turn, folding the river etc.? Thanks for comments.