Definitely the whole weighing thing can cause unnecessary stress. I was weighed at my 12 week appointment only and it was awful. The ob told me I was obese (I was 87kg), high risk and the baby would not develop properly! She said I could not do family birth centre and I just cried. We contacted the family birth centre and they did not consider me high risk at all and I had a healthy properly developed baby.
Good grief. I weigh about that too, but I am very muscular and am basically built like the brick proverbial. I have very little fat on me. Even when I was a size 8 I weighed about 70kg because I had big bones and muscles. I'm a 12 now and don't consider myself obese at all!

But my BMI says I'm obese (stupid invention that was )