can I fold please?

I'm still trying to learn the art of folding and get it wrong a lot - do you think I did the right thing here?

hero on button with AA
3 limpers call, hero raises, blinds and limpers call. (12SB's)
Flop: Qh 9s 2h
SB bets, BB calls, MP raises, MP1 calls, hero calls?, BB folds, SB calls. (10.5 BB's)

Turn: 8c SB bets, MP raises, MP1 reraises, hero folds...

did I do ok? looks like 2 pair, set or straight to me.

I'll probably get flamed for not raising the flop, but my logic is this: raising will do little to protect my hand since I am in late pos. The flop is looking a little bit too co-ordinated for my liking, so I'd like to wait to see hopefully a safe turn card before raising when I'll also be able to extract maximum value.