It's day one of a WPT event and you have your chips up to about 11,100 from it's original 10,000. The blinds are still 25-50 and you look down at Q

Q

and make it 150 to go.
The button calls as does the big blind. The flop comes: J

9

2

and the big blind checks to you. You bet 400 and the button calls. The big blind now check raises you to 1900, 1500 more.
You call and the button folds. The turn card comes the K

and your opponent bets 5500. You now have a flush draw as well as a straight draw. Based on what you know of the player you are quite sure that you are up against two pair, trips, A

J, or possibly a very small flush.
The King doesn't scare you at all, but you are stil pretty sure that your opponent has the best hand. What would you do?
With the blinds so small there is no reason to gamble with QQ when he could have hit a gutshot, flush, or a set. He could even be bluffing you with just Ah-x, in which case he still has 3 aces and 8 spades in the deck left to hit. If he has paired his x card (Ah-j, Ah-9, Ah-2) then that's 3 more outs... easy fold.