quick question, too risky?

[purerealm]

2 villains
hero (sm blind) : Q Q no diamonds
preflop raised 10x bb

flop: J A 2 all diamonds

hero checks, check check

turn: J

hero: pot bet

Is this too risky? I had no reads and I wasn't too sure whether or not they'd throw away TPTK with the flush on the board but I figured with the checks they both had pairs

I took the pot.

[purerealm]

actually my main worry was that someone had K J , checked to top pair on flop.