If you are pregnant and somewhat stressed please do not go to Costco. You will think you are going to pick up milk and bread, but instead you will load your cart with Ravioli, Orange Chicken, and 800 Oreo Cookies. Then you will go home and eat approximately 19 cookies while you think as you dip each cookie into the milk: "this one is the last one."
And then you will wonder at your obesity.
That's what I did anyway.