I won the hand, but even so was I wrong to chase this down?
PokerStars 0.25/0.50 Hold'em (9 handed)
converter Preflop: Hero is Button with :ah, :qs.
2 folds, MP1 calls,
1 fold, MP3 calls,
CO raises, Hero calls,
1 fold, BB calls, MP1 calls, MP3 calls.
Should I have 3 bet preflop? Flop: (10.40 SB)

,

,
(5 players) BB bets, MP1 calls, MP3 calls, CO calls, Hero calls.
Getting 10-1 pot odds I have a backdoor flush and 2 overcards so i figure it's worth 1 small bet. Anyone disagree? Turn: (7.70 BB)
(5 players) BB bets, MP1 calls, MP3 calls,
CO raises, Hero calls, BB calls,
MP1 3-bets, MP3 folds,
CO caps, Hero calls, BB calls, MP1 calls.
Now here's where it gets iffy. After CO raises my pot odds are about 6-1, but was it wrong to call? Then it got capped and I figure at this point I have no choice. Was I right or wrong? River: (24.70 BB)
(4 players)
BB checks,
MP1 bets, CO calls,
Hero raises, BB folds, MP1 calls, CO calls.
Final Pot: 30.70 BB
Results in white below:
MP1 has 5h Kh (flush, king high).
CO has 4s 4d (three of a kind, fours).
Hero has Ah Qs (flush, ace high).
Outcome: Hero wins 30.70 BB.