You are not missing out here. Discretion is the better part of valor. Your bet on the flop was solid. With a 4 crd straight on the turn, combined with a 3 card flush, just how much can you still like your queens. You need feedback from your opponent, and all he's done is call.
I'd do my best to just limp it home from here.
Fold to large bets on the river, most of which will not be bluffs.