AK TPTK OOP RAISED BIG ON FLOP

no reads or pt on him, only a few hands in the game..


Party Poker No-Limit Hold'em, $ BB (6 max, 5 handed) converter

Button ($52.95)
Hero ($56.65)
BB ($34.80)
UTG ($37.95)
MP ($76.85)

Preflop: Hero is SB with K[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img]. Hero posts a blind of $0.25.
UTG calls $0.50, <font color="#666666">1 fold</font>, Button calls $0.50, <font color="#CC3333">Hero (poster) raises to $2.75</font>, <font color="#666666">1 fold</font>, UTG folds, Button calls $2.50.

Flop: ($7) J[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $4</font>, <font color="#CC3333">Button raises to $25</font>, Hero folds.

Final Pot: $36

what is most likely an unknown could have here at nl50? was i too weak?