Party Poker No-Limit Hold'em, $ BB (8 handed) FTR converter on zerodivide.cx

MP2 ($0)
Hero ($24.10)
Button ($28.05)
SB ($30.77)
BB ($51.86)
UTG ($28.33)
UTG+1 ($24.40)
MP1 ($5.25)

Preflop: Hero is CO with K, A. SB posts a blind of $0.10.
3 folds, Hero raises to $1, Button calls $1, SB (poster) calls $0.90, 1 fold.

Flop: ($3.25) 8, A, Q (4 players)
SB checks, Hero bets $2, Button folds, SB calls $2.

Turn: ($7.25) 4 (3 players)
SB checks, Hero bets $3, SB calls $3.

River: ($13.25) 6 (3 players)
SB checks, Hero bets $4, SB calls $4.

Final Pot: $21.25

Turn i wasn't sure where i stood in the hand.

River check behind?