I dont know anything other than that villian is loose preflop. I figure I'm probably WA/WB here on the turn, thats why I checked behind. Bad?

Party Poker No-Limit Hold'em, $ BB (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($98.50)
Button ($44.65)
SB ($67)
BB ($164.15)

Preflop: Hero is UTG with K, Q. SB posts a blind of $0.50.
Hero raises to $4, 2 folds, BB calls $3.

Flop: ($8.50) 4, 7, Q (2 players)
BB checks, Hero bets $6, BB calls $6.

Turn: ($20.50) Q (2 players)
BB checks, Hero checks.

River: ($20.50) 3 (2 players)
BB bets $15, Hero calls $15.

Final Pot: $50.50