Things That Can Happen During Pregnancy

when you miss a period, you may suspect that you're pregnant. correlating few symptoms and signs can help in identifying the chances of pregnancy

when you miss a period, you may suspect that you’re pregnant. correlating few symptoms and signs can help in identifying the chances of pregnancy.The following early signs and symptoms of pregnancy that can help you to identify your chance of getting conceived.

The Early symptoms of pregnancy



Tender swollen breasts

This can be the one of the first symptom that you ca identify in yourself. As early as two weeks after conception, the hormonal changes in your body may make your breasts tender, tingly or sore and even fuller and heavier.


Fatigue and weakness is so common in 1st month. During early pregnancy, levels of the hormone progesterone soar. In high enough doses, progesterone can put you to sleep and others include the low blood pressure, low sugars in the blood can add to the cause.

Slight bleeding or cramping

a small amount of spotting or vaginal bleeding is also called as an implantation bleeding.

it happens when the fertilized egg attaches to the lining of the uterus and this mostly happens around 10 to 14 days after fertilization.

The color of the bleeding can either vary from light to lightest in color compared to normal period bleeding. During this period you may experience abdominal cramping also.

Nausea with or without vomiting

This is called as Morning sickness, and one of  the classic symptoms of pregnancy. This can occur as early as two weeks of pregnancy.

The reason would be the rapidly rising levels of estrogen, which causes the stomach to empty more slowly. Pregnant women also have a heightened sense of smell, so various odors – such as foods cooking, perfume or cigarette smoke – may cause waves of nausea in early pregnancy.

Food aversions or cravings

when you are pregnant you have high affinity for special like of smells such as coffee or fried foods. Food cravings are common during this period and the reason for this is also the hormonal changes in the body.


Due to the increased blood circulation caused by hormonal changes mild headaches can occur during the period of pregnancy.


The reason for the constipation is increasing hormone progesterone, which causes food to pass more slowly through the intestines, and this can lead to constipation.

Mood swings

unusually emotional and weepy and Mood swings also are common, especially in the first trimester.

Faintness and dizziness

During the pregnancy, the blood vessels in your body dilate and your blood pressure may drop, this can lead to a feeling of lightheaded or dizzy. and sometimes the sudden decreasing amounts of sugar in the body can be the cause of the dizziness during pregnancy.

Raised basal body temperature

basal body temperature is the temperature that you record when you first wake up in the morning.

This temperature increases slightly soon after ovulation and remains at that level until your next period.

If you’ve been charting your basal body temperature to determine when you ovulate, its continued elevation for more than two weeks may mean that you’re pregnant.

Missed Period

This possible the earliest sign of pregnancy but not all missed periods can be diagnosed as the sign of pregnancy.

How can you really tell if you are pregnant?

If all the symptoms and the signs correlate and you doubt that you are pregnant then it is better to do a confirmatory test to find if you are really pregnant or not.(source)

Home pregnancy tests

This can be used on the first day of your missed period.
These tests work by detecting the hormone human chronic gonadotropin (hCG) in your urine.

This hormone is only found in the body in high levels during pregnancy.

In this test a chemical in the stick changes color when it comes into contact with this hormone. Waiting times  about 10 minutes to deliver an accurate reading.

Clinical urine test

These tests aren’t necessarily more accurate than an HPT. However, your doctor may be able to help eliminate any possible errors that might affect the accuracy of the test. Depending on your health insurance plan, a clinical urine test may cost more than an HPT.
Results of a clinical urine test can vary depending on the medical facility that you visit. However, you can usually expect your results within a week of taking the test.

Blood test

These tests are done in the  doctor’s office. These laboratory tests uses your blood to detect the hormone HCG. Blood tests can detect HCG earlier than urine tests.

There are two types of pregnancy blood tests:

Qualitative hCG blood test:

This test checks to see whether any hCG is being produced in the body. It gives a simple yes or no answer as to whether you’re pregnant.

Quantitative hCG blood test:

This test measures the specific level of hCG in the blood.
If your hCG level is higher or lower than expected based on how far along you think you are in the pregnancy.

Quantitative hCG blood tests are very accurate because they measure the exact amount of hCG in the blood. They can detect smaller amounts of the hormone than a qualitative hCG blood test or a urine test.

Pregnancy stages

What happens in the first month of pregnancy?

The Pregnancy is divided into 3 trimesters.

  • The 1st trimester begins from your 1st month of pregnancy, starting on week 1.
  • The 2nd trimester begins during your 4th month of pregnancy, starting on week 14.
  • The 3rd trimester starts during your 7th month of pregnancy, on week 28.

The first month marks the beginning of the first trimester.
pregnancy is measured from the first day of your last menstrual period about 3-4 weeks before you’re actually pregnant — a full-term pregnancy usually totals about 40 weeks from LMP (last menstrual period)

What happens during week 1 – 2?

During this period about 2 weeks later, the egg that’s most mature is released from your ovary — this is called ovulation.

This happens earlier or later, depending on the length of your menstrual cycle. The average menstrual cycle is 28 days.

After the egg is released , it travels down your fallopian tube toward your uterus. If the egg meets up with a sperm, they combine. This is called fertilization.

Fertilization is most likely to occur when you have unprotected vaginal sex during the 6 days after the ovulation.

What happens during week 3 – 4?


This is the period when the fertilized egg moves down your fallopian tube and divides into more and more cells. It reaches your uterus about 3–4 days after fertilization.

These cells form a ball that floats around in the uterus for about 2–3 days. This ball them gets attached to the lining of your uterus and is called implantation.

It usually starts about 6 days after fertilization and takes about 3–4 days to be complete.

Pregnancy symptoms week 3 – 4

  • feeling tired,
  • feeling bloated,
  • peeing more than usual,
  • mood swings,
  • nausea, and
  • tender or swollen breasts.

What happens during week 5 – 6?

The embryonic stage of pregnancy lasts about 5 weeks. This is when all the major internal organs start developing.

During this period following changes occur in the baby

  • The embryo is less than 1/5 inch (4–5 mm) long.
  • The beating heart and circulatory system develop.
  • Buds for arms and legs develop.
  • The neural tube begins forming. The neural tube will later form the brain, spinal cord, and major nerves.
  • The umbilical cord begins developing.

What happens during week 7 – 8?

During this period following changes occur in the baby

  • The embryo is 1/4 to 1/2 inch (7–14 mm) long.
  • The heart has formed.
  • Webbed fingers and toes develop.
  • The arms bend at the elbows.
  • External ears, eyes, eyelids, liver, and upper lip begin
  • The sex organs are the same — neither female nor male — in all embryos until the 7th or 8th week.

Pregnancy symptoms week 7- 8

  • breast tenderness,
  • feeling very tired,
  • peeing more often,
  • heartburn,
  • nausea, and vomiting
  • heart beats faster

This is the time when the embryo becomes fetus. umbilical cord connects the fetus to your placenta and uterine wall. External sex organs also start to develop.

What happens during week 9 – 10?

During this period following changes occur in the baby

  • The embryo is–1.5 inches (21–40 mm) long.
  • Fingers and toes grow longer.
  • The umbilical cord connects the abdomen of the fetus to the placenta.
  • The cord carries nutrients and oxygen to the fetus and takes waste away from the fetus.

What happens during week 11 – 12?

During this period following changes occur in the baby

The growing fetus is measured from the top of its head to its buttocks. This is called crown-rump length (CRL).

  • The fetus has a CRL of 2–3 inches (6–7.5 cm).
  • Fingers and toes are no longer webbed.
  • Bones begin hardening.
  • Skin and fingernails begin to grow.
  • Kidneys start making urine.
  • Early sweat glands appear.
  • Eyelids are fused together.

Pregnancy symptoms week 11- 12

  • Your breasts continue growing and changing.
  • Get the pregnancy acne you may have outbreaks.
  • Gain much weight about 2 pounds.

What happens during week 13 – 14?

During this period following changes occur in the baby

  • ​​​​​​The fetus has a CRL of about 3 inches (8 cm).
  • The biological sex of the fetus can be determined by looking at external sex organs on an ultrasound.
  • Hair begins to grow.
  • The prostate gland begins developing in biologically male fetuses.
  • Ovaries move down from the abdomen to the pelvic area is biologically female fetuses.
  • The roof of the mouth is formed.

What happens during week 15 – 16?

During this period following changes occur in the baby

  • The fetus has a CRL of about 4.5 inches (12 cm).
  • Hundreds of thousands of eggs form in the ovaries of biologically female fetuses.

Pregnancy symptoms week 15- 16

  • Nausea usually lessens.
  • Breast changes — growth, soreness, and darkening of the areola .
  • shortness of breath or to breathe faster.
  • bleeding gums, nosebleeds, or nasal stuffiness.

What happens during weeks 17 – 18?

During this period following changes occur in the baby

  • The CRL of 5.5–6 inches (14–15 cm) develops.

What happens during week 19 – 20?

During this period following changes occur in the baby

  • The fetus has a CRL of about 6.5 inches (16 cm).

Pregnancy symptoms week 19-20

  • Mother would feel fetal movements for the first time during the fifth month. This is sometimes called quickening.
  • Heartburn, constipation, breast changes, dizziness, shortness of breath, nose bleeds, and gum bleeding are common.
  • Your breasts may be as much as 2 cup sizes bigger

During the 6th month, your

What happens during week 21 – 22?

During this period following changes occur in the baby

  • The fetus has a CRL of about 7 inches (18–19 cm).
  •  develop blood cells, taste buds, eyebrows and eyelashes.
  • Bone marrow starts making blood cells.
  • Taste buds begin to form.

What happens during week 23 – 24?

During this period following changes occur in the baby

  • The fetus has a CRL of about 8 inches (20 cm).
  • Eyebrows and eyelashes usually develop between weeks 23 and 26.

Pregnancy symptoms week 23- 24

  •  Shortness of breath may improve.
  • Your breasts may start producing colostrum — tiny drops of early milk.
  • Some women have Braxton-Hicks contractions – feel like a painless squeezing of the uterus or abdomen.
  • Braxton-Hicks contractions are normal and not a sign of early labor.

What happens during week 25 – 26?

During this period following changes occur in the baby

  • The fetus has a CRL of about 9 inches (23 cm).
  • The fetus develops more and more fat from now until the end of pregnancy.

What happens during week 27 – 28?

During this period following changes occur in the baby

  • The fetus has a CRL of about 10 inches (25 cm).
  • Eyelids are usually fused together.

Pregnancy symptoms week 27- 28

  •  Back pain is common.
  • Pregnancy symptoms from earlier months continue.

What happens during week 29 – 30?

During this period following changes occur in the baby

  • CRL of about 10.5 inches (27 cm).
  • Testes usually begin descending into the scrotum from the abdomen in a biologically male fetus.

What happens during week 31 – 32?

During this period following changes occur in the baby

  •  CRL of about 11 inches (28 cm).Pregnancy symptoms week 31-32
  •  more difficult time breathing as your uterus grows upward.
  • You may get varicose veins — blue or red swollen veins most often in the legs
  • hemorrhoids — varicose veins of the rectum. Hemorrhoids can be painful and itchy and can cause bleeding.
  • get stretch marks where your skin has expanded.
  • Braxton-Hicks contractions, heartburn, and constipation may continue.

What happens during week 33 – 34?

During this period following changes occur in the baby

  • The fetus has a CRL of about 12 inches (30 cm).
  • The eyes have developed and pupils to constrict and dilate when exposed to light.

What happens during week 35 – 36?

During this period following changes occur in the baby

  • CRL of about 12.5 inches (32 cm).
  • The fetus is considerably fatter
  • skin is no longer wrinkled.

Pregnancy symptoms week 35-36

  • fatigue,
  • trouble sleeping,
  • trouble holding urine,
  • shortness of breath,
  • varicose veins,
  • stretch marks.

What happens during week 37 – 38?

During this period following changes occur in the baby

  • The fetus has a CRL of about 13–14 inches (34–36 cm).
  • The fetus has a firm grasp.

What happens during week 39 – 40?

During this period following changes occur in the baby

  • You will probably give birth around this time.
  • The average newborn baby weighs 7–8 pounds and is between 18–22 inches (46–56 cm) long with legs extended.

Pregnancy symptoms week 39-40

  • your uterus has expanded from your pelvis to the bottom of your rib cage.
  • Pregnancy symptoms in the tenth month largely depend on when the fetus drops down into the lower part of your uterus.
  • Shortness of breath, heartburn, and constipation usually improve when the fetus drops.
  • Your cervix will begin to open — dilate — to prepare for delivery. This may happen a few weeks before delivery, or it might start when you go into labor. You may feel sharp pains in your vagina as your cervix dilates. (source)

Many of the body changes and the symptoms of pregnancy you experience can change from one trimester to other.

Talk with your doctor about any symptoms that interfere with your daily life. Together, you can find relief and comfort for your pregnancy.

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