Flopped 2 pairs on scary board
In a six man .02/.05 table, in UTG+1 I had QJ suited diamonds. UTG folded. I open raised to 20c. Everyone folds except button, who flat calls.
Flop comes 9, J, Q all spades.
I bet 30c into a pot of 47c. I got called.
I am not sure where I am here. I am thinking maybe he has A10 or maybe QK with perhaps one spade. I've seen people call that with a gutshot. I think if he had made a straight he probably would have raised with a flush draw on the board, unless he had the K of spades.
Turn comes 9h. I put in 70c into a pot of about $1.10. I got called again. I am thinking if he had a 9, wouldn't he raise here with a straight and flush draw out there? So I am still thinking he is on a draw.
River is a harmless card, a low card of clubs, I can't remember what.
I have $1.70 left. The pot is about $2.50.
What should I do here?
It turns out he had QQ and I was unable to win by the flop. But ignoring that, what should I have done on the river?
It simply didn't occur to me that he had QQ, because I had assume he would have 3 bet preflop or at least reraised me on the flop with scary draws out there.
So I ended up betting my stack away while drawing dead.