Gestational age of pregnancy is devided in to three parts. Its called trimester. 1st trimester  is about  first 3months lasting, starting from 1st week of Gestation andContinues to 12week.during 8week of your pregnancy your baby is call an embryo. After 8week it is called fetus.
Not sure what week you are in your pregnancy? The first step to nailing your current week down is to calculate your due date. Keep in mind that your your date might change especially if you have irregular periods. A lot happens for you in the first trimester, too. A couple of the most common early pregnancy symptoms you may experience

Changes in Your Mind:

  • Morning sickness and nausea: Unfortunately it doesn’t just strike in the morning, Itd picks up by about week 5 of your prgnancy. If it’s severe, you might want to consider talking to your doctor about medications to treat the symptoms of pregnancy-related nausea.
  • Mood swings: You may (or may not) feel up, then down, then up again by week 7. If you have a history of depression or think it might be more serious, talk to your doctor about getting screened for prenatal depression.

As your pregnancy progresses this trimester, you may experience plenty of other pregnancy symptoms like heartburn, constipation, metallic taste, food aversions and headaches. Keep in mind  that every woman is different. So just because your friends reported cramping or
frequent urination doesn’t guarantee either symptom will happen to you too.

Pregnancy week by week development in 1st trimester 

Week 1 & 2
Your menstrual period has just ended, and your body is getting ready for ovulation. For
most women, ovulation takes place about 11 – 21 days from the first day of the last period.
If conception takes place, the sperm creates zygote, which is the basis for a new human being. The fertilized egg
spends a couple days traveling through the fallopian tube toward the uterus, dividing into cells called a morula. The morula becomes a blastocyst and will eventually end up in the uterus.from day 6-12 after conception, the blastocyst will imbed into the uterine lining and begin the embryonic stage.

Week 3
Its week 3but in case of Fetal Development ,it is week 1.
The embryo is going through a lot of basic growth at this time, with the beginning
development of the brain, spinal cord, heart, and gastrointestinal tract.

Week 4 & 5
In case of Fetal Development ,it is week 2and3.
Arm and leg buds are visible, but not clearly distinguishable. The heart is now beating at a steady rhythm. The placenta has begun to form and is producing some important hormones
including hCG. There is movement of rudimentary blood through the main vessels. The early structures of eyes and ears are forming. The embryo is ¼ inch long
by the end of these weeks.

Week 6
In case of fetal development its week 4.
The formation of the lungs, jaw, nose, and palate begin now. The hand and feet buds have webbed structures that will become the fingers and toes. The brain is continuing to form.The embryo is about ½ inch in length.

Week 7
In case of fetal development its week 5.
Every essential organ has begun to form in the embryo’s tiny body,
The hair follicles are forming,
and the eyelids and tongue have begun to form.  The elbows and toes are more visible

Week 8
In the case of fetal development  its week 6.
Everything that is present in an
adult human is now present in the small embryo. The bones are beginning to form, and the muscles can contract. The facial features continue to mature,The embryo is about 1 inch long and is the size of a bean.

Weeks 9 through 12
Fetal development weeks 7 through11.
The fetus has grown to about 3 inches in length and weight about  half an ounce. The sex organ are fromed.the head is nearly half the size of the entire fetus.

Now Your doctor will review your medical history and perform some test.you will likely have an initial ultrasound to confirm a heartbeat, You might also be
screened for diabetes, depending on your family history. You’ll likely have a nuchal translucency screening (between weeks
11 and 14 of pregnancy) to look for Down syndrome based on your risks, doctor may also recommend NIPT around week 9 a noninvasive blood screening that looks for chromosomal abnormalities.

Eat right. Now’s the time to cut down on caffeine, as well as to learn which foods to avoid.


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