6.5: Make a play for it and hope?

[Ortho]

The blinds just went up from 100/200 to 200/400. I'm lucky to get to see a flop, and lucky-ish to flop a pair. The pot is the same size as my stack, and the first player has checked. If I fold here I'm a long ways behind and need to double up. My thinking is that it could be right to push here and hope my pair of 5s are good. If I fold, I have 1145 and maybe a little fold equity, though someone is open-limping most hands. This is not a good flop for my hand at all, but I'm pretty desperate. Push here?

PokerStars No-Limit Hold'em Tourney, Big Blind is t400 (5 handed) FTR converter on zerodivide.cx

Hero (t1570)
UTG (t2325)
MP (t2635)
Button (t4380)
SB (t2590)

Preflop: Hero is BB with 5[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, MP calls t400, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (t1100) 9[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img]
SB Checks.