The major organs systems have started developing.
The major organs systems have started developing.
The website Womenshealth offers a nice overview of the stages of pragnancy. This also includes a section about the developing baby in the first trimester.
the organs grow larger
The first trimester ends at week 13, when the developing embryo becomes a fetus.
It grows larger (cheaters)
The traditional designations are: During the first trimester - abortion (spontaneous abortion, if you want to avoid ambiguity) During the second trimester - miscarriage During the third trimester - stillbirth
It grows larger (cheaters)
Some people gain no weight during the first trimester, particularly if they have morning sickness. Other people gain a small amount, particularly towards the end of the first trimester. The most weight is gained during the second trimester though.
The first trimester is most critical for the development of a baby. The babies brain is formed during the first trimester.
What hormones could be implicated in failing to maintain the pregnancy during the first trimester?
After a sperm fertilizes an egg its referred to as a zygote. Then it becomes a fetus, I believe after the first trimester.