NL makes me uncomfortable

[sfer]

Playing live 1/2, $500 max buy in. I have about $190 and it's my second orbit. I have yet to show anything down or mix things up so my image is likely a blank sheet. UTG raises to $12. He's been raising about every 3rd hand and he has about $400 behind. Folded to me in MP with AQo and I call. A loose BB defends and we see the flop 3 ways.

The flop is A [img]/images/graemlins/heart.gif[/img] 6 [img]/images/graemlins/heart.gif[/img] 4 [img]/images/graemlins/club.gif[/img]. BB checks, UTG bets $25, I call, the BB folds.

Turn is a non- [img]/images/graemlins/heart.gif[/img] 4. UTG checks and I check behind.

River is a 7 [img]/images/graemlins/heart.gif[/img]. UTG thinks and checks again, I bet $40.