Lay this one down?

Party Poker No-Limit Hold'em, $ BB (7 handed) FTR converter on zerodivide.cx

BB ($93.20)
Hero ($182.50)
MP1 ($119.40)
MP2 ($202.20)
CO ($111.50)
Button ($122.15)
SB ($132.70)

Preflop: Hero is UTG with A:spade:, A:heart:. SB posts a blind of $0.50.
Hero raises to $4, 2 folds, CO calls $4, 2 folds, BB calls $3.

Flop: ($12.50) 7:heart:, J:spade:, K:heart: (3 players)
BB checks, Hero bets $10, CO folds, BB raises to $20, Hero calls $10.

Turn: ($52.50) 6:club: (2 players)
BB bets $30


Think this one's a laydown?

probably so - maybe reraise the flop for info and an easier laydown?
Looks like 2 pair or trips but could just be AK/KQ/QT etc. thinking you are bluffing it out - or they are just trying to steal.

Why just call the flop if you're not confident with your hand? Only two cards in the deck are going to help you. I'd say fold that turn.

I like to push when I think I'm ahead. The push is after his raise on the flop.