Must it Always Be There? 1/2 bbv

I was getting ready to leave last night at 3:29am. The new Dealer stepped behind the existing one. 5 people limp in and I look at KK in the small blind. I raised to 15 and 3 people called, including the straightforward woman in the big blind.

Flop was A 6 7. Yuck.

I bet 40 and the bb and button called. Turn was a red Q and I check folded to her 40$ bet.


Discussion:
I wonder if I even needed to do the standard hopeless continuation bet. Into 3 people that might just be giving money away.

Also I am on an uncanny run of overcards. I have seen a lot of KK-JJ in nl cash games that run into one single over card on the board.