3/6 Live - - TPTK CR'd on Turn

[yellovizion]

This is my first post.

I'm in a very loose 3-6 live game (usu. 6+ players to the flop). Game is 8-handed.

Hero is CO with A [img]/images/graemlins/heart.gif[/img]K [img]/images/graemlins/heart.gif[/img]. All players call for $3. Hero raises to $6. Button folds, both blinds call. (12 small bets after exorbitant rake)

Flop is A37 rainbow. Checked to UTG who bets. All fold to hero who raises. SB folds, BB calls two cold, UTG calls. (9 big bets)

UTG is a maniac. BB recently sat down (w/in 5 min) - - don't have any read on him.

Turn is a 4. All four cards of a different suit. Checked to hero who bets. BB check-raises. UTG calls two cold. Hero calls.

BB bets in the dark before the river card is revealed.

River is a K. UTG folds. Hero raises. BB re-raises. Hero calls.

How did I play this? I feel good about the turn call. I thought BB could easily have two pair which gave me a few outs with a huge pot. However, raising on the river after BB bet in the dark is troubling me.

Any feedback is appreciated. This is my first post, so I apologize if I have not posted properly. Thanks.