AJo vs KK, should I have just folded?

[nebuer]

$0.05/$0.1 No Limit Holdem
6 players
Converted at weaktight.com

Stacks:
UTG (<font color="#0000cc">$10.95</font>)
UTG+1 (<font color="#0000cc">$9.80</font>)
CO (<font color="#0000cc">$2.14</font>)
Hero (<font color="#0000cc">$10.47</font>)
SB (<font color="#0000cc">$11.92</font>)
BB (<font color="#0000cc">$9.44</font>)

Pre-flop: J[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/club.gif[/img] is dealt to Hero. (BTN)
<font color="#cc0000">UTG raises to $0.4</font>, <font color="#777777">2 folds</font>, Hero calls $0.4, <font color="#777777">2 folds</font>

Flop: 5[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/club.gif[/img] ($0.95, 2 players)
<font color="#cc0000">UTG bets $0.3</font>, <font color="#cc0000">Hero raises to $0.6</font>, UTG calls $0.3

Turn: 7[img]/images/graemlins/heart.gif[/img] ($2.15, 2 players)
UTG checks, <font color="#cc0000">Hero bets $1</font>, UTG calls $1

River: T[img]/images/graemlins/club.gif[/img] ($4.15, 2 players)
UTG checks, Hero checks

Final Pot: ($3.95)
UTG shows: K[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img]
Hero shows: J[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/club.gif[/img]

UTG wins $3.95 ( won +$1.95 )
Hero lost -$2.00


I was thinking on the flop, it most likely missed him and he was just making a cont. bet, so I raised him to see if he'd fold. After he called I had an idea he might be on a draw, and that got even more in my mind after he checked the turn. Did I do the right thing?