[Closed] Call on the river ?

Not sure if it was a good idea to call on the river :

Known players:
[tg]Position_Stack:hands/vp$ip/RaisePreflop/AF/WTS/ORL/BBvsSteal/W$SD;Hero$10,44:///////;CO$17,29:47/64/0/0,7/52/0/0/43;[/tg]
0,05/0,1 No-Limit Hold'em (5 handed)
Hand recorder used for this poker hand: PokerStrategy.com Elephant 0.104 by www.pokerstrategy.com.

Preflop: Hero is SB with Q♥, Q♠
MP3 folds, CO calls $0,10, BU folds, Hero raises to $0,40, BB folds, CO calls $0,30.

Flop: ($0,90) A♣, 9♥, 5♠ (2 players)
Hero bets $0,5, CO calls $0,50.

Turn: ($1,90) 3♣ (2 players)
Hero checks, CO checks.

River: ($1,90) 8♦ (2 players)
Hero checks, CO bets $0,7, Hero calls $0,70.

Final Pot: $3,30

Results follow (highlight to see):
CO shows double paire, aces and nines (Ad 9s)
Hero shows (Qh Qs)

CO wins with double paire, aces and nines (Ad 9s)