Plz help me analize this hand

[Sinnister]

plz help me analyze this hand

hero is in lp with A [img]/images/graemlins/heart.gif[/img] J [img]/images/graemlins/spade.gif[/img] everyone folds hero raises sb calls bb folds


flop 3 [img]/images/graemlins/diamond.gif[/img] j [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/club.gif[/img]

sb checks, hero bets sb calls

turn A [img]/images/graemlins/diamond.gif[/img]

hero bets *not sure if i shouldve* sb raises hero reraises sb caps

riv blanbk hero checks sb bets hero calls

sb shows q [img]/images/graemlins/diamond.gif[/img]5 [img]/images/graemlins/diamond.gif[/img]


with no reads on an oppt what is the default way to play this hand, should i have been scared of the flush and checked the turn, or should i have bet and just called his raise. any feed back is good