[Worrots]

I would have bet the turn and seen what happened afterwards. You've got two pair, the flush draw and the ace over card. I think it's worth betting to either clear out some players or build a huge pot for your flush draw (which I realize would lose to a full house, but why play scared?).

Problem with the river the way you played is that after the check fest on the Turn and the early checking on the River, an aggressive player with an okay hand might bet at it and you have no way of knowing where you really are. Hands that might still be around to take a stab at it include: 55, AA, QQ, AQ, Q10, Jx, Ax. Many more than the Kx that beats you. If you bet the Turn, the River quandry might not arrive.

And, yes, I would have bet the River again after being called/raised on the Turn. At microlimits. I think you win this enough against chasers to warrant staying in the hand.

My thoughts.