$50 NL KK hand

[Gavagai]

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) converter

CO ($45.55)
Button ($48)
SB ($17.95)
BB ($23.05)
UTG ($49.50)
Hero ($66.55)
MP1 ($11.85)
MP2 ($111.25)
MP3 ($66.50)

Preflop: Hero is UTG+1 with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">UTG raises to $2</font>, <font color="#CC3333">Hero raises to $7</font>, <font color="#666666">7 folds</font>, UTG calls $5.

Flop: ($14.75) 5[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $7</font>, Hero ?

No read on player, have just sat down pretty much. I'm thinking that AQ doesn't call the preflop raise, and that its unlikely that &lt;TT or AK lead the flop. Is it reasonable to fear JJ, QQ and AA? How often does a set make a solid lead in these games?

Thanks,

Gavagai