Yeah that certainly IS interesting!
I wouldn't stress Kimbaz, the 20ish week one is to check all the limbs and organs and stuff, I had that, and the 12 week one to check for Down's sydrome. They actually told me I didn't need to have the 12 week one if I really didn't want, but I still didn't really believe I was pregnant, so actually seeing the baby was important to me then.

But the research is interesting, and does suggest that until we know exactly how ultrasounds affect unborn babies, not to freak out, but to practice moderation where we can and not have many more u/s's than we really need to.

Happy pregnancy!