Bet, Raise, PUSH?

[directscooter]

Villain's 2nd hand at the table, he has $99, I cover.
$100 NL Hero is dealt 8 [img]/images/graemlins/diamond.gif[/img] 5 [img]/images/graemlins/diamond.gif[/img]
Villain calls, 2 more calls, 3 folds to me, I complete, BB checks.
$5 FLOP 6 [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/club.gif[/img] J [img]/images/graemlins/diamond.gif[/img]
I lead for $5, BB folds, Villain raises to $15, 2 folds to me, Hero.....?????????
I have a gut shot and a flush draw 12 outs twice so I am a small dog... does a push make sense here?