First off I would not have limped in with this hand, raise it or muck it. You're single suited with Aces and a bad low draw preflop. This hand only works well heads-up or 3 way. You're dogmeat against a big field. Secondly, this is really is not a good flop for you. I know you might think so flopping nut set, but look at the hand closely. Only a 9 is a safe card for you. Every other card brings either a low or a straight draw, with or without a flush draw. Most likely a flush draw with it. Unfortunately you have to pray for the board to pair the turn or muck it, Yes Muck It! Unless you get a free ride to the river or a very cheap turn bet, you're probably not going to get the right odds to call. JMO...