AT from the BB flops TPTK

[blackize]

First hand at the table so no reads or stats on anyone. When it gets 3 bet back at me what is my plan? I misclicked for the cap. When the turn came relatively safe I decided to lead out again.

Party Poker 2/4 Hold'em (10 handed) converter

Preflop: Hero is BB with T[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, UTG+2 calls, <font color="#666666">3 folds</font>, CO calls, Button calls, <font color="#CC3333">SB raises</font>, Hero calls, UTG+2 calls, CO calls, Button calls.

Flop: (10 SB) 4[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero raises</font>, UTG+2 folds, CO calls, <font color="#CC3333">Button 3-bets</font>, SB folds, <font color="#CC3333">Hero caps</font>, CO calls, Button calls.

Turn: (11.50 BB) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, CO folds, <font color="#CC3333">Button raises</font>, Hero calls.

River: (15.50 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, Hero calls.

Final Pot: 17.50 BB