Missed my huge draw and I'm heads-up at the river

[SoCalPat]

What do you do here? No reads.

Paradise Poker 1/2 Hold'em (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is BB with K/images/graemlins/diamond.gif, Q/images/graemlins/diamond.gif.
<font color="666666">2 folds</font>, MP1 calls, <font color="666666">2 folds</font>, CO calls, <font color="666666">1 fold</font>, SB completes, <font color="CC3333">Hero raises</font>, MP1 calls, CO calls, SB calls.

Flop: (8 SB) T/images/graemlins/club.gif, J/images/graemlins/spade.gif, 5/images/graemlins/diamond.gif <font color="blue">(4 players)</font>
SB checks, <font color="CC3333">Hero bets</font>, MP1 folds, CO calls, SB folds.

Turn: (5 BB) 2/images/graemlins/heart.gif <font color="blue">(2 players)</font>
<font color="CC3333">Hero bets</font>, CO calls.

River: (7 BB) 6/images/graemlins/club.gif <font color="blue">(2 players)</font>
<font color="CC3333">Hero ....

[Bob Bryant]

Check/Fold...it looks doubtful he was on a draw of any kind, he has at least a pair...