4 Weeks Pregnant

Signs Of Pregnancy Set In

Pregnancy symptoms internalAt four weeks pregnant, the blastocyst that will develop into your baby has found its way to the uterus where it settles for the next eight months. Here, it buries itself deep into the lining of the uterus and starts producing a hormone called human chorionic gonadotropin (hCG), which helps to maintain the lining. It also sends a signal to the ovary to stop releasing an egg each month, which stops your monthly periods. hCG is the hormone that is measured in pregnancy tests. So, a home pregnancy test taken now will probably be able to detect your pregnancy!

Read: How to calculate your due date 

Your baby at 4 weeks pregnant

As soon as the blastocyst settles in the uterus, it splits into two distinct parts. One half – the embryo – develops into the baby, and the other half forms the placenta – the organ that establishes connection between the foetus and uterine wall. It is the placenta that supplies oxygen and nutrients to the growing baby and removes wastes from the baby’s blood.

Development of the Embryo

The embryo is no bigger than a poppy seed. Yet, it’s growing continuously. There are three distinct layers around the embryo which will later develop into different organs of the baby.
• The outer layer – ectoderm, will form the baby’s skin, eyes, hair and nervous system.
• The middle layer – mesoderm, will form the muscles, bones, heart, kidneys and sex organs
• The inner layer – endoderm – will develop into baby’s digestive system, liver and lungs.

Pregnancy symptoms at 4 weeks

Symptoms of pregnancy at 4 weeks include:

  • Slight cramping and spotting of blood. And there’s every possibility that you could mistake it for a period, as it often occurs around the date of your monthly periods.
  • Lower back pain
  • Vaginal spotting (implantation bleeding)
  • Food aversions
  • Sensitivity to smell
ReadPregnancy Symptoms Before a Missed Period

At 4 weeks pregnant, symptoms of pregnancy start to appear. The first pregnancy symptoms resemble those for premenstrual syndrome. So, fatigue, tingling or aching breasts, or nausea might lead you to believe your period will be starting any day. But by the end of this week, your expected period will not take place as your pregnancy is on!

Can you do a home pregnancy test now?

While there is a high possibility that you may test positive for pregnancy, its best to wait for a week after you miss your period. At the end of five weeks, the levels of HCG in the urine are high to detect pregnancy.

ReadA Guide to using Home Pregnancy Test Kits

To get the best results from a pregnancy test:
• First and foremost, it’s important to read the instructions on the packaging carefully as they could vary from brand to brand.
• Secondly, take the test first thing in the morning – that’s when the levels of HCG in the urine are the highest.

If you test negative: If don’t see the pink or blue line even after missing your period, don’t be disheartened. Try again after a few days.


Tip for Pregnancy Week 4

Will your baby be a boy or a girl? This ancient chart is supposed to predict your child's gender, based upon your age and the month of conception!
  • Calculate your week / month of pregnancy and track your baby development,

    Click here for a ready reckoner.