AKs hits flop, faces pot bet

[jtr]

Hi, all.

Villain (UTG+1) has not been sitting at the table long -- have only seen about 20 hands. In that time he raised preflop once and called a few times, so he's no maniac. Beyond that I can't say.

Party Poker $50 No-Limit Hold'em, $1 BB (10 handed) converter

MP3 ($49)
CO ($41.7)
Button ($62.2)
Hero ($49)
BB ($146.4)
UTG ($22.3)
UTG+1 ($47)
UTG+2 ($70.5)
MP1 ($25.05)
MP2 ($46.3)

Preflop: Hero is SB with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/club.gif[/img]. Hero posts a blind of $0.5.
<font color="#666666">1 fold</font>, <font color="#CC3333">UTG+1 raises to $3</font>, <font color="#666666">3 folds</font>, MP3 calls $3, CO calls $3, <font color="#666666">1 fold</font>, Hero (poster) calls $2.50, BB calls $2.

Flop: ($15) K[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
Hero checks, BB folds, <font color="#CC3333">UTG+1 bets $14.25</font>, MP3 folds, CO folds, Hero?

So my AKs has hit the flop, but it looks like the villain also likes this flop. I really wasn't sure what to do here. Of course I'm hoping he has AQ or KJ or something, but if he's really as conservative with his preflop raises as my tiny sample size indicates (only seen 1 in 20 hands) then a lot of his possible hands either beat me or we're tied (e.g., AA, KK, QQ, AK, KQ).

So what would you do? It looks to me like folding or raising all-in are the only two options, and folding seems incredibly weak here, but still...

Thoughts?

Of course you're welcome to beat up on me for checking the flop -- if I'd bet out things might have been easier.