AQs - I become a calling station

[shant]

I hate how I played this, it didn't feel right to keep calling. I felt like a raise or a fold was in order but couldn't find one. Thoughts?

MP3: 36/9
Button: 54/5

Party Poker 2/4 Hold'em (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is SB with A/images/graemlins/spade.gif, Q/images/graemlins/spade.gif.
UTG folds, UTG+1 folds, MP1 folds, MP2 folds, <font color="#CC3333">MP3 raises</font>, CO folds, Button calls, Hero calls, BB calls.

Flop: (8 SB) 3/images/graemlins/diamond.gif, A/images/graemlins/club.gif, 6/images/graemlins/diamond.gif <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, <font color="#CC3333">MP3 bets</font>, <font color="#CC3333">Button raises</font>, Hero calls, BB folds, <font color="#CC3333">MP3 3-bets</font>, Button calls, Hero calls.

Turn: (8.50 BB) 4/images/graemlins/club.gif <font color="#0000FF">(3 players)</font>
Hero checks, MP3 checks, <font color="#CC3333">Button bets</font>, Hero calls, <font color="#CC3333">MP3 raises</font>, Button calls, Hero calls.

River: (14.50 BB) 8/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">MP3 bets</font>, Button calls, Hero calls.

Final Pot: 17.50 BB

[Gravy (Gravy Smoothie)]

3-bet preflop and lead the flop, this hand gets much easier to play.