Is this too aggressive for NL50?

[Vedocorban]

I've been raising a lot of pots at this table, and villain has frequently 3bet me.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $62.05
BB: $50.00
UTG: $48.00
MP: $37.55
CO: $125.85
Hero (BTN): $49.75

Preflop: Hero is dealt K[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/heart.gif[/img] (6 Players)
3 folds, <font color="red">Hero raises to $2.00</font>, <font color="red">SB raises to $6.00</font>, BB folds, Hero calls $4.00

Flop: ($12.50) 8[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">SB bets $8.00</font>, <font color="red">Hero raises to $24.00</font>

I really felt like my bottom pair was good. Am I pot committed if villain shoves?