Nl25 66

What's the best line here?

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.1/$0.25 No-Limit Hold'em (9 handed)

Known players:
[tg]UTG1$56.54:///////;UTG2 (Hero)$25.00:///////;MP1$36.45:///////;MP2$45.10:///////;MP3$26.45:///////;CO$26.82:///////;BU$10.26:///////;SB$52.40:///////;BB$29.73:///////;[/tg]

Preflop: Hero is UTG2 with 6:c, 6:d.
UTG1 raises to $0.75, Hero calls $0.75, MP1 folds, MP2 calls $0.75, 4 folds, BB calls $0.50.

Flop: ($3.1) 6:h, 7:d, 4:s (4 players)
BB checks, UTG1 checks, Hero bets $2.50, MP2 folds, BB calls $2.50, UTG1 folds.

Turn: ($8.1) 3:s (2 players)
BB bets $4.00, Hero calls $4.00.

River: ($16.1) J:s (2 players)
BB bets $5.50, Hero calls $5.50.

Final Pot: $27.1.