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Pregnancy Diary Week 3

Discover your pregnancy journey

Pregnancy Diary Week 3

In this period, ovulation and fertilisation have hopefully taken place. During this week, implantation will take place.

After the egg and sperm meet in the fallopian tube, the zygote moves down through the uterus where cell division immediately occurs. Within 72 hours, implantation should occur.


How your baby is growing

What you can expect  at this time

A beneficial food for your pregnancy nutrition


Pregnancy Diary Week 3: How Is Your Baby Growing?

The baby inside your uterus is now called a blastocyst, which looks like a tiny ball that is composed of hundreds of cells, that divide in such an impressively rapid manner.

Later on, the blastocyst develops into a placenta that produces pregnancy hormone human chorionic gonadotrophin (hCG).

The hormone signals the ovaries to cease from releasing eggs. It also triggers an increased production of progesterone and oestrogen. This prevents the shedding of the lining of the uterus. Human chorionic gonadotrophin is the hormone which your pregnancy test detects and confirms that you are indeed pregnant. 

During this period, the amniotic fluid begins to form around the cluster of cells thereby forming amniotic sac. The amniotic fluid protects and cushions the baby for the next few months.

At this point in time, the little blastocyst begins receiving nutrients and oxygen, and discard waste products.

What you can expect

You may have noticed a little spotting at this time. This is known as the implantation bleeding. It is caused by the burrowing of the egg into the uterine lining. Even before your doctor confirms it or before the pregnancy test reveals it, some women may have already experience several signs and symptoms of pregnancy.

These signs include frequent urination, increased sensitivity to odours, nausea, vomiting, food aversions, spotting, bleeding, fatigue and tender and swollen breasts.

Fatigue is often experienced during this period because of an increased progesterone level and the body requires extra effort in making the baby.

If you have been monitoring your basal body temperature, and you noticed that the temperature remains elevated for at least 18 days, it can be a sign that you are pregnant. Morning sickness may begin to occur this week.

You could experience dizziness and your partner may complain about your mood swings, though you are pretty sure that you are just being reasonable.


At this point in time, you may have noticed changes in your discharge. Your cervical mucus becomes stretchier, cloudy, thin and whitish which makes it a perfect condition for the sperm to travel. Understanding the progress of your pregnancy makes you proactive about your own health and your baby’s condition.

It can also give you ample information about what to expect with your baby during this period and you will know what changes you may experience. In effect, it can help you determine the best ways on how to cope with significant changes you are to undergo. Sometimes, a change in diet can help you in dealing with these changes successfully.

So, what are the best foods to take during the third week of pregnancy and how can it help pregnant women? If you have not started taking pregnancy vitamins, you should start taking them now.

Folic acid is beneficial in the growth of your baby. This vitamin is best derived from cereals, spinach, beef liver, orange, peanuts and black-eyed peas.

Bananas For Pregnancy Nutrition

Did you know that some people believe that eating bananas can increase your likelihood of having a baby boy? This is a tale which many pregnant women tend to believe in especially when they aim to have a baby boy.

Banana is probably one of the best foods to take during this early stage of pregnancy. The fruit is fortified with essential vitamins and minerals which can be very helpful to your body as well as the baby. It contains fabulous nutrients such as Vitamin B6, Vitamin C, fibre and potassium.

Bananas are also excellent sources of folate, calcium, magnesium, iron, Zinc, Vitamin B12, protein and carbohydrate which can be beneficial both for the mother and the baby. Potassium can keep you energised by maintaining electrolyte and fluid balance in the body. It facilitates in the transmission of nerve impulses in the body.

Lack of potassium is said to be one of the major reasons behind the occurrence of leg cramps. Its Vitamin B6 content is beneficial in optimising the baby’s growth and development. It helps in the formation of antibodies, red blood cells and neurotransmitters as well as relieving nausea and vomiting.

Bananas are also beneficial in keeping the levels of cholesterol, blood sugar and blood pressure at idea levels.

Pregnancy Diary Week 3

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All articles on the blog and website are intended as information only. Please do not consider any of the information provided here as a substitute for medical advice. At all times seek medical advice directly with your own doctor and medical team.


This website was formerly Merrion Fetal Health. The clinic has undergone a rebrand and is now known as Merrion Ultrasound.