This is major leak in my game that has been costing me a lot of chips. I raise 3-5 BB holding pocket aces or AKs. Flop comes something like A, 2, 6 and I hit top pair aces + top kicker or the flop comes with nothing threatening and I have an over pair. I bet 3/4 or pot depending on the blinds and someone calls. On the turn nothing threatening bet 3/4 pot and they call again. When should I start suspecting they have tripps? Any cues I can pick up without having a lot of info on the player? They could have called my pre flop raise with AQ, AJ or Ax (in the micros) after all. To my dismay they show a set of deuces or something like that 
How does one avoid such situations?
Thank you.
