Hello AltarEgo,
Welcome to the English NL Hand Evaluation Forum! Hopefully we will see more hands from you in the future. I hope that with our help you can improve your play and as well move up the limits. We will be waiting for the next hands and till that good luck on tables!
Would be nice if you used some hand converter, so we could also see stacks and everything. A lot of things could change.
Preflop: Why do you Call a raise with A6s? Did you have any information on the other guy? Calling and just hoping for a hit you wont play profitable your hand.
As played
Postflop: He is not 3betting, SB is raising. Preflop 2nd acting guy is 3betting but postflop it's Bet/Raise/3Bet. Neither he can't have trips, he can have set - if he has 99 and hits 9 it's set, if it's 99X board and he has 9 then it's trips. Next question is what kind of limit we are playing? How deep we are, what are other guys stacks? But assuming those stories about the stack sizes I assume that you don't even play with full stack, therefore get it in and protect your hand.
Also you should be playing 100BB if you are playing BSS.
Best Regards.