AA on paired baby flop

[chris269]

Villain is somewhat laggish, 37/27/2.2 over 60 hands.

Poker Room skin
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Stack sizes:
UTG: $278.75
CO: $71.75
Button: $196.15
SB: $89.35
Hero: $95.95

Pre-flop: (5 players) Hero is BB with A[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/club.gif[/img]
3 folds, <font color="#cc0000">SB raises to $3.5</font>, <font color="#cc0000">Hero raises to $12</font>, SB calls.

Flop: 3[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/heart.gif[/img] ($24, 2 players)
SB checks, <font color="#cc0000">Hero bets $19</font>, <font color="#cc0000">SB raises to $38</font>, Hero ?