AJ from BB

New table and even new client so no reads. Just started playing here after some play over at Poker Stars.

Party Poker 0.50/1.00 Hold'em <font color="#0000FF">(10 handed)</font> link

Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">2 folds</font>, MP2 calls, <font color="#666666">2 folds</font>, Button calls, SB completes, <font color="#CC3333">Hero raises</font>, UTG calls, MP2 calls, Button calls, SB calls.

I think I got the best hand.

Flop: (10.00 SB) J[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG calls, MP2 calls, Button calls, SB folds.

I may get a weak K to fold or just cold call me here if I bet. If I get cold called I have to evaluate on the turn. If I get raised then hmm... I have to think about that.

Turn: (7.00 BB) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, UTG calls, MP2 calls, Button calls.

Nice card for me unless someone is sitting with Q10.

River: (11.00 BB) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
Hero ...

Not that I think this 8 of hearts matters since anyone with 88 should have folded by now but I am worried about the 3 cold callers on the turn. How likely am I to have the best hand? I think I should check here since I would really really hate to get raised on the river. A check here may indicate weackness and a weaker hand may bet out like AT, A9 etc...