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.
The first 2 weeks of prenatal development, from conception until the fertilized egg implants itself in the wall of the uterus, is known as the germinal stage. This stage is characterized by rapid cell division and the formation of the blastocyst.
embryo
The first few cell divisions occur in the fallopian tube after fertilization. The fertilized egg undergoes several rounds of cell division to form a solid ball of cells called a morula, which then develops into a hollow ball of cells called a blastocyst as it moves towards the uterus for implantation.
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.