Turned 2 pair, villain raises me.

[7n7]

Very early in this session. Had 0 read on villain up to this point.

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
9 players
Converter

Stack sizes:
UTG: $102.20
UTG+1: $63.25
MP1: $25
MP2: $94.15
MP3: $99
CO: $120.70
Button: $73.20
Hero: $109.15
BB: $21

Pre-flop: (9 players) Hero is SB with 2[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/heart.gif[/img]
3 folds, MP2 calls, 3 folds, Hero calls, <font color="#cc0000">BB raises to $4</font>, MP2 calls, Hero calls.

Flop: 3[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/club.gif[/img] ($12, 3 players)
Hero checks, BB checks, MP2 checks.

Turn: 2[img]/images/graemlins/spade.gif[/img] ($12, 3 players)
<font color="#cc0000">Hero bets $12</font>, BB folds, <font color="#cc0000">MP2 raises to $50</font>,

Hero??