ok, so maybe I have preggie brain and read the email wrong, but here's what it says:
Through the placental wall, the embryo is able to absorb oxygen, proteins, sugar, and fat for the crucial task of building cells. Talk about growing pains: Now that your uterus has expanded from its pre-pregnancy size of a tangerine to its present grapefruit-like proportions, you may be feeling occasional cramping in your lower abdomen and sides. These cramps are normal and shouldn't pose any risk to the baby.
See the confusion here?
I think it's a typo or something. Thanks for the info.
Asanamama, that website is neat!