first trimester
embryo The first three months of pregnancy are the first trimester
embryo
first trimester
The fetus
It's not a baby until week 38. Week 1-10 it's a embryo and week11-38 a fetus. Not sure what you mean with located since it's in your uterus. Your uterus is not big and the fetus is even smaller.
It's often caused by the preparation fo the uterus for childbirth, called Brackston Hicks. If you are 9 months pregnant, you should be watchful for the real thing. Your first signs of labor will probably be contractions.
In human development, the first cell divisions occur in the salpinx of the woman, before the embryo is implanted in the uterus
embryo
not at first, but into the first trimester it will get hard. Your uterus creates a lining that does not shed; which is called your "wall".
Its ok during the first trimester where growth and development of brain is very important.
Fetal Development period. Whereas the first 8-9 weeks is embryonic development or embryogenesis.
Uterus Eggs are first fertilized in the fallopian tubes after sexual intercourse. After approximately 4 days or so the embryo (fertilized egg) travels to the uterus where it attaches to the endometrium, or the lining of the uterus. This is where the baby will stay as it develops over the next 9 months. The baby is not in the abdomen, instead it is the uterus that expands as the baby grows. The endometrium is also what is referred to by some as the "womb".