JJ from the BB

[neeeel]

$1/$2 10 handed
I am in the BB with J[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/diamond.gif[/img]

2 limpers, SB raises, I 3-bet, 1 fold, 2 callers
Flop comes 5[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/club.gif[/img]
SB donks, I ....
I really didnt know what to do here, a raise from the SB usually means an A, so was there any point calling? at the same time, it seemed too weak to fold right there, but i didnt fancy a raise too much either.I spent so much time wondering what to do that my time ran out, the site has all-ins for ppl who dont act in time, so i saw the showdown
for free. Does the backdoor flush draw make it a little more worth at least seeing the turn? If he is bluffing, then he is still likely to bet out on the turn as well. Thinking about it now, I would like to raise the flop and represent an A, i think i was just too scared after taking a couple of bad beats earlier. what do ppl think