Well personally, when I see a super-obese pregnant woman (really, how do you tell???) I have a stigma to it. I think it's quite frankly child abuse. And I see obese women in the grocery store buying poor quality food for their children. It makes me so sad.
The stigma isn't as prominent as smoking, though. I mean, 67% of the US is overweight or obese. It's acceptable and actually normal to be overweight when pregnant; you see the pregnant woman on TV eating ice cream and think it's just the normal, healthy way to have a pregnancy. It's the slender people that get most of the shaming; like "you should eat more, you're eating for two!"
But as long as you're a non-smoker, it's okay.
Stumbled into Primal due to food allergies, and subsequent elimination of non-primal foods.
Start Gluten-Free/Soy-Free: December 2012; start weight 158lbs, Ladies size 6
Start Primal: March 2013, start weight 150lbs, Ladies size 6
Current: 132lbs, Ladies size 2
26lbs lost since cutting the crap.