Getting played back with AA

[NDHand]

Party Poker No-Limit Hold'em, $ BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($18.82)
Button ($10.70)
SB ($47.64)
BB ($22.25)
Hero ($32.80)

Preflop: Hero is UTG with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.10.
<font color="#CC3333">Hero raises to $1</font>, <font color="#666666">3 folds</font>, BB calls $0.75.

Flop: ($2.10) 3[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $1.5</font>, Hero calls $1.50.

Turn: ($5.10) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $3</font>, Hero calls $3.

River: ($11.10) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $2</font>, BB calls $2.

Final Pot: $15.10


This is one of those spots where im still unsure if I should let him fire away or put a raise in somewhere. After his river check, I put him on a busted draw and figured I could perhaps extract a bit of value from him, since there was no way he would try for a C/R with a 3 after I only called all the way.