Minraised on my semi-bluff steal

I have been at the table for about 30 hands and it has been playing very loose (~40% VP$IP) and passive (which explains the inevitable question of why am I playing A6s)

No specific read on the villain.


Ultimate Bet No-Limit Hold'em, $.50 BB (10 handed) FTR converter on zerodivide.cx

Button ($60.25)
SB ($27.70)
BB ($71.75)
UTG ($47.50)
UTG+1 ($18.50)
UTG+2 ($66.20)
MP1 ($8.05)
MP2 ($18)
MP3 ($11.25)
Hero ($40.45)

Preflop: Hero is CO with 6[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">UTG+2 raises to $1.25</font>, <font color="#666666">3 folds</font>, Hero calls $1.25, Button calls $1.25, <font color="#666666">1 fold</font>, BB calls $0.75.

Flop: ($5.25) Q[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, UTG+2 checks, MP3 checks, <font color="#CC3333">Hero bets $3</font>, <font color="#CC3333">Button raises to $6</font>, BB folds, UTG+2 folds, MP3 folds, Hero ???


So I got minraised on my semi-bluff steal. Does he have a hand? Is my 4.5:1 odds good enough to find out?