Can I please fold these queens and stop throwing away $?

[KSOT]

Ultimate Bet 0.50/1 Hold'em (9 handed) converter

Preflop: Hero is SB with Q[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">5 folds</font>, CO calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, BB calls, CO calls.

Flop: (6 SB) 7[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, CO calls.

Turn: (4.50 BB) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, BB folds, <font color="#CC3333">CO raises</font>, Hero calls.

River: (8.50 BB) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, Hero calls.

Final Pot: 10.50 BB

I'm so sick of calling down when I KNOW they were ace chasing. Can I fold that river or maybe even the turn raise? I'm assuming your answers will invraiably be "no."