Top 2-Pair gets bombarded

SB is 22/6/1.1 after 70 hands
BB is unknown.

I'm unsure about the preflop-raise. It was more like an accident. The posted blind confused me so I thought I was in late.
I think I'm ahead on the flop most of the times although the 3bet bothers me. After his 3bet pf I think I'm up against AK. So I cap.
I'm not sure about the turn-call. The flop looks pretty ragged. I find it hard to put anyone on a hand. I'm still reluctant to give SB credit for AA though he bet into me although I capped and now he 3bets again. I also don't know how to deal with the call/cap by BB. I think I have 3 outs to a FH though, a strong hand on this flop and implied odds. How would you play the hand?

PartyPoker - $0.50/$1 Texas - 10 players (Converter: PGC)

Hero is LP1 with A[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/spade.gif[/img]

PreFlop
MP3 posts BB, CO posts BB
<font color="green">UTG Calls</font>, <font color="blue">UTG+1 folds</font>, <font color="green">MP1 Calls</font>, <font color="blue">MP2 folds</font>, <font color="green">MP3 checks</font>, <font color="red">Hero RAISES</font>, <font color="green">CO Calls</font>, <font color="blue">Button folds</font>
<font color="red">SB RAISES</font>, <font color="green">BB Calls</font>, <font color="green">UTG Calls</font>, <font color="blue">MP1 folds</font>, <font color="blue">MP3 folds</font>, <font color="green">Hero Calls</font>, <font color="green">CO Calls</font>

(5 players) FLOP: 2[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] ( Pot Size: 8.50 BB )
<font color="red">SB BETS</font>, <font color="green">BB Calls</font>, <font color="green">UTG Calls</font>, <font color="red">Hero RAISES</font>, <font color="blue">CO folds</font>
<font color="red">SB RAISES</font>, <font color="green">BB Calls</font>, <font color="blue">UTG folds</font>, <font color="red">Hero RAISES</font>
<font color="green">SB Calls</font>, <font color="green">BB Calls</font>

(3 players) TURN: 4[img]/images/graemlins/spade.gif[/img] ( Pot Size: 15.00 BB )
<font color="red">SB BETS</font>, <font color="green">BB Calls</font>, <font color="red">Hero RAISES</font>
<font color="red">SB RAISES</font>, <font color="red">BB RAISES</font>, <font color="green">Hero Calls</font>
<font color="green">SB Calls</font>

(3 players) RIVER: K[img]/images/graemlins/club.gif[/img] ( Pot Size: 27.00 BB )
<font color="green">SB checks</font>, <font color="red">BB BETS</font>, <font color="green">Hero Calls</font>
SB is All-In

Final Pot:29.20 BB