This is a typical hand. Am I right to raise him?

PokerStars No-Limit Hold'em, $0.02 BB (7 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

CO ($11.11)
Button ($2.97)
SB ($1.56)
BB ($6.23)
UTG ($3)
MP1 ($2.94)
Hero (MP2) ($1.93)

Preflop: Hero is MP2 with A, J
2 folds, Hero bets $0.08, 2 folds, SB calls $0.07, 1 fold

Flop: ($0.18) 8, 2, 2 (2 players)
SB bets $0.10, Hero raises to $0.30, 1 fold

Total pot: $0.38 | Rake: $0

Results:
Hero didn't show A, J (nothing).
Outcome: Hero won $0.38