Hand converted with online PokerStrategy.com hand converter:
$0.5/$1 Fixed-Limit Hold'em (6 handed)
Preflop: Hero is BU with 4:c, 4:d.
3 folds, Hero raises, SB 3-Bets, BB folds, Hero calls.
Flop: (7 SB) 9:c, T:d, 6:s (2 players)
SB bets, Hero calls.
Turn: (4.5 BB) J:s (2 players)
SB bets, Hero folds, SB gets uncalled bet back.
Final Pot: 4.5 BB.
He was unknown. Call him down?
looks ugly you are still in a pretty good situation. So you can continue calling here.