Pregnancy Symptoms Week by Week | First Trimester

You could be pregnant? When did pregnancy symptoms begin to appear in all the pregnant women? Pregnancy symptoms start after the 2 weeks of conception and continue up to the last trimester. These Pregnancy symptoms week by week vary due to the fluctuations in the pregnancy hormones, internal changes in mother as well as changes in the baby. These symptoms are mild in the starting weeks and then become severe.

Pregnancy symptoms week by week
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Some symptoms appeared soon and disappear late, while some appeared late and disappear soon. These Early symptoms are the sign of being pregnant and are the physical changes in your body due to changes in the body temperature, blood circulation, hormones concentration, and plasma protein changes.

As the baby is growing, female feel more uncomfortable and sleep difficulty due to the growth of the baby. During the second trimester, she feels more trouble than the first trimester and during the last trimester, she becomes more and more uncomfortable plus urges to deliver the baby. Some women depressed during the last trimester because of the fear of being delivered.


The pregnancy period contains almost 36 to 40 weeks and pregnancy symptoms week by week become more prominent since conception. Briefly, some symptoms are discussed during some weeks. They included

1- Pregnancy Symptoms At First 3 weeks

In the 3rd week of pregnancy after the fertilization of ovum and sperm, physical signs begin to appear which are the clues of being pregnant.

  • Implantation Bleeding

As the fertilized ovum being to borrows into the wall of the uterus, light spotting occurs which can misunderstand the women with her normal menstrual cycle.

  • Nausea, with or without vomiting

Pregnancy symptoms week by week
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Nausea is a common complaint by all the pregnant women become hormones fluctuations or progesterone hormone surge that may be associated with or without the vomiting. Women become more sensitive for the smells, dust, allergy or such irritating smells that stimulate or trigger nausea. Nausea mostly occurs in the morning. If it is severe than usual, consult your physicians as soon as possible.

  • Missed period

Missed Period is a traditionally accepted hint for being pregnant which is confirmed by a urine pregnancy test later on. But it is not so true, because there may be any irregularity in menstruation due to multiple reasons like a cyst, stress, anxiety, malnourished, etc. Therefore, some time periods are delayed whom women considered the pregnancy. Missed Periods during the whole pregnancy are due to the absence of FSH or LH hormones and the presence of progesterone hormone.

  • Positive blood pregnancy test

In some conditions like if you are at the risk for miscarriage, placental abruption, or ectopic pregnancy, your physician can ask you to come for a blood draw or blood test. Blood tests can also detect smaller amounts of hCG than urine pregnancy tests. Thus, you may find out that you are pregnant or not sooner with the blood tests than you would with an at-home test.

  • Breast Changes

Like other body changes, your boobs can start to get sore under the action of progesterone or estrogen hormones. Your nipples may darken more than usual as your body starts prepping to make milk.

  • Abdominal Cramps

Some women may experience abdominal cramps or abdominal discomfort during the first three weeks of pregnancy. It is also a very commonly seen pregnancy symptom in pregnant women.

What is the size of your baby?

The fertilized ovum in your body is very small and actually looks more like a group of cells than a baby. It could be seen by the naked eye if it were not inside your body or placed outside. Moreover, it is the size of the head of a pin and almost .0019 inches.

2- Pregnancy Symptoms At 6 weeks

  • Fatigue

You’re so drained because your body’s still getting used to your changing hormones. Pregnancy hormones put you more sleep and drowsy.
  • Nausea

Nausea may be associated with vomiting or not, a common facing complaint during this time. But such morning sickness doesn’t just happen in the morning but can happen at any time which is stimulated.

  • Sore breasts

Breast is swollen and tender during 6 weeks of pregnancy under the action of the hormones released by the mother as well as my baby.

  • Frequent urination

Increased urination is also a common sign which becomes more common due to intake filtration.

  • Gas and bloating

Constipation, gas, bloating, abdominal cramps are commonly seen complaints during pregnancy.

3- Pregnancy Symptoms At 9 weeks

There are many symptoms that present at the 9 weeks of pregnancy specifically. You and your baby are going through the many changes in the body due to the production of the hormones.

Nausea with or without vomit

At 9 weeks the level of human chorionic gonadotrophic hormone increases so u might be feeling more nauseous muddy and tired. It may be associated with vomiting or maybe not.

Weight gain

You are unlikely to be looked pregnant at 9 weeks because there are few body changes at 9 weeks. But some physical changes visible at the 9 weeks is weight gain.

Morning sickness

Many women experience the bout of nausea and vomiting which is called morning sickness during any time day or night it begins at 6 the week of pregnancy, peaks at 9 weeks and disappear at 16 weeks of pregnancy.

Breast Tenderness

Secondly breast tenderness at 9 the week is more significant. The most common cause of Breast tenderness before the period may be fluctuating the level of hormone. During this period estrogen and progesterone level changes which cause the dull and coarse pain in Breast at 9 the week of pregnancy.

Frequent Urination

Thirdly frequent urination is the most important symptom which appears at the 9th week of gestation because uterus size increases and the baby grow properly which causes the pressure symptoms. The uterus causes pressure on the bladder which increases the frequency of urination.

Food Cravings

Calories intake increases in pregnancy because the baby grows in the mother’s womb and the baby takes nutrition from the mother. Therefore, the mother eats too much to full fill the requirements of herself and baby. So food craving increases in pregnancy which also results in weight gain at 9 weeks of pregnancy.

4- Pregnancy Symptoms At 12 weeks

Entering into the 12th week of pregnancy when your baby has reached the size of an apricot. Some of the symptoms that you have been experiencing before may persist as u can still feel being queasy, anorexia, burping, but symptoms specific to this week can include:

Weight gain, skin hyperpigmentation, known as melasma, darker areolas around the nipple
tender or sore breasts, Food aversions, Fatigue, Dizzy spells, Increased urination. They are described below

  • Dizzy Spells

Dizziness and lightheadedness can be the result of Low blood pressure or Low blood sugar. So to explain the underlying physiology to low blood pressure we have progesterone the key regulator here, which causes your blood vessels to relax and widen around 12 weeks pregnant, increasing the flow of blood to your baby, but slowing the return of blood to mother since every organ’s blood supply is being slowed including the brain. This contributes to that light-headed, dizzy feeling.

Another cause of dizziness during pregnancy is low blood-sugar levels, this can occur as a result of less food intake

  • Skin Changes

The hormonal surge during pregnancy leads to dark spots formation and over dark skin tone and especially acne during pregnancy, But the process will gradually reverse after pregnancy and melasma will disappear

  • Breast Changes

Tenderness and soreness in the breast are usual symptoms that will be encountered. To combat these:

        • Cold packs can be used
        • Wearing a tight bra can worsen the condition so bra of perfect size should be worn.
  • Areola Changes

Areola; the skin around nipples, turns darker as are the other parts of the body especially cheeks and forehead

  • Food aversion

Human chorionic gonadotrophins the hormone which can be really fruitful for your baby’s brain but can make you feel nauseous all the time

5- Pregnancy Symptoms At 15 weeks

Pregnancy symptoms week by week diminishes or becomes more severe. These all are due to hormonal changes produced by the mother as well as by the fetus.

  • Nosebleeds

Epistaxis or nosebleeds symptom becomes evident at 15 weeks of pregnancy. It is due to a combination of the increased blood volume and sensitive nasal passages.

  • Swollen gums

When you are pregnant, Your gums are more swollen and sensitive now. You must take care of them by doing a brush daily. Also, go to a nearby good dentist for regular checkups.

  • Increase Baby Size

In the 15 weeks, the size of the baby is as big as a navel orange. The average 15-week baby weighs around 2.5 ounces and measures 4 inches.

  • Increased Sex Drive

15 weeks is almost a 4th month, this is the time when your body gets used to the body changes and your energy back now. You feel more energetic and well, there is no nausea this week. If you’re not up to sex, it’s completely understandable

6- Pregnancy Symptoms At 18 weeks

Here are the pregnancy symptoms of 18 weeks in a future mom’s

  • Swollen hands or feet

It is a very very common pregnancy symptom seen in pregnant women mostly obese women. This swelling can be an annoying or disgusting pregnancy symptom. But it is common. If it is mild, don’t be upset. If swelling becomes sudden or severe, call your physician as soon as possible because it may be a sign of underlying pathology like edema, kidney malfunctioning, etc.

  • Varicose veins

Varicose veins are visible purple or blue veins in the legs that are swollen due to the extra pressure developed by the circulatory system. To cope with this, change your posture, do exercises as much as you can, and avoid tight shoes and clothes.

  • Sleeping difficulty

As you are moving on, your baby growing more. You are feeling more and more uncomfortable during sleep.

  • Baby Movements

Baby kick is a pregnancy symptoms week by week getting stronger. Whether you have twins, triplets, or a single baby, you feel the more precise and definitive sensation of baby movements.

  • Baby’s size at 18 Weeks

At 18 weeks of pregnancy, the baby is as big as an artichoke. Baby measures about 5.6 inches long and weighs about 6.7 ounces now. The baby keeps growing quickly, as the pregnancy is moving ahead. As the baby grows, you need extra energy or food to nourish the fetus and you feel more hungry.

  • Backaches

Backache, very common pregnancy symptoms week by week getting stronger because your baby is putting a lot of the pressure on your body insides and causing more aches and the pains in your back.

Can you feel pregnant after 2 days?

Pregnancy changes begin to appear after one or two weeks when fertilized ovum has attached to the uterine wall. After 2 days of unprotected intercourse, you might feel nausea, vomiting, or burning micturition because of the sex-related changes and hormones. You can feel the pregnancy changes when the beta hCG hormone is produced by the attached ovum.