NL2 OESD against loose player

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.01/$0.02 No-Limit Hold'em (7 handed)

Known players:
[tg]SB$4.23:///////;BB (Hero)$2.02:///////;MP1$2.00:///////;MP2$2.26:///////;MP3$2.56:///////;CO$0.57:///////;BU$0.70:///////;[/tg]

Preflop: Hero is BB with 5:c, K:d.
5 folds, SB calls $0.01, Hero checks.

Flop: ($0.04) 6:c, 2:h, 4:d (2 players)
SB checks, Hero bets $0.03, SB raises to $0.06, Hero raises to $0.18, SB raises to $0.30, Hero calls $0.12.

Turn: ($0.64) 5:s (2 players)
SB bets $0.61, Hero folds, SB gets uncalled bet back.

Final Pot: $0.64.

I'm not sure what I should have done here. The SB was 68, 5, 1.3, 27 over 19 hands. I feel like he had nothing and i wanted to call.