Hi, sorry about your bad luck. You can use the Equilator program from PS.com to see the probability that your hand will still be best by the river.
You'll see that it will be, 78% of the time. But that means 22% of the time your opponent will win. Its only 1 in 5 but still its not that unlikely.
Remember to play within your bankroll so you can survive it when the luck doesnt go your way.
The main thing is that both you and your opponent did the right thing - you had a full house and he had trip Aces with 2nd best kicker - so neither of you will ever fold this hand.
GL
