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Right now, your little one resembles a tiny tadpole – tail included! But don’t worry, the embryonic tail disappears around week 8 of your pregnancy. 

The nervous and circulatory systems will begin forming this week, as well as the baby’s other systems. The first of these to be operational is the circulatory system, a.k.a. heart and blood vessels. In fact, their heart is already starting to take shape! But for now, the heart is comprised of two working channels. 

Your baby is currently made up of three layers that represent the different bodily systems. These are: 

If you have a regular menstrual cycle, you may have noticed one of the first signs of pregnancy: a missed period. Now would be a good time to take a urine test or blood screening to confirm that you are expecting. 

And while you have been pregnant for about two weeks, this is your first month of pregnancy in medical terms. Congratulations, now you have nine more months to go! Remember, a normal term lasts 40 weeks. 

At this stage your baby is very tiny – about the size of a poppy seed.  

Congratulations! You have officially conceived and your little bundle of joy is starting to develop. 

The fertilized egg, also known as a zygote, will divide into two cells, then four, and so on until there are approximately 100 cells just days after fertilization. This ball of cells is called a blastocyst and it is already located in your uterus.  

The outer cells of the blastocyst will transform into the placenta. The placenta will provide oxygen and nutrients to your baby throughout your pregnancy. It will also remove waste from their blood.  

You still aren’t technically pregnant in week 2, but your body is already preparing for it. Remember, doctors count your pregnancy from your last menstrual cycle, so if you receive a positive pregnancy test you are actually farther along. 

During week 2, one ovum (egg) has become dominant. This egg will mature and the ovary will release it from your fallopian tubes, causing ovulation.  

This is the beginning of your journey!

Technically speaking, you haven’t conceived quite yet. When talking about your first week of pregnancy, doctors refer to the first week of your last menstrual period (LMP) before you are expecting. In fact, you won’t conceive in just a few weeks. 

So, why even count it?

For starters, tracking your cycle will help you be on the lookout for early pregnancy symptoms. After all, a missed period is one of the earliest signs. Doctors also count your LMP to help establish your baby’s due date.