If you’re pregnant or concerned you may be pregnant, you may start to wonder what’s exactly going on in there or how a pregnancy develops. Until you were faced with pregnancy, you may never have cared about human development and tuned it out when they taught this in school.
By this time, you may have figured out how far along you are and want to know exactly what stage of development your embryo, fetus or baby is in. You may also have heard that in the early stages of pregnancy, it’s simply just a bunch of tissue or cells: but there is so much more going on. It’s a complex and fascinating process.
Did you know?
Fertilization, the union of a female egg and a male sperm, is the first step in a complex series of events that leads to pregnancy. At the moment the sperm meets the ovum (egg), the union results in a fertilized ovum (zygote), and a new life has begun.[i] At this moment, a distinct and unique set of DNA is created which contain all the instructions needed to create a human life. The only thing that’s still needed is the time to develop.
This process can happen within hours after having unprotected sex, long before you miss your period or suspect you might be pregnant.
Many people debate when life begins; however, the science is clear. In fact, a study titled a Biologists’ Consensus on ‘When Life Begins’ reported that 95% of all biologists affirmed the biological view that a human’s life begins at fertilization.[ii]
[i] [Considine, Douglas (ed.). Van Nostrand’s Scientific Encyclopedia. 5th edition. New York: Van Nostrand Reinhold Company, 1976, p. 943]
A new life has been created, now what? Within 24 hours after fertilization, the egg that will become your baby rapidly divides into many cells. By the eighth week of pregnancy, the embryo develops into a fetus. There are about 40 weeks to a typical pregnancy. These weeks are divided into three trimesters. We will break down the milestones in each of those trimesters.
This is generally the first three months of pregnancy. During this trimester, the most amount of growth and change will occur as the fertilized egg will change from just a small grouping of cells into a fetus that starts to exhibit human features.
The Second Trimester (weeks 13-28)
The Third Trimester (weeks 29-40)
If you think you may be pregnant the very first thing you need to do before you make any decision regarding your pregnancy is to have the pregnancy medically confirmed. This is done though an ultrasound exam. A pregnancy test alone cannot confirm if the pregnancy is developing in the right place or if it is viable (meaning if the pregnancy is alive and will continue as 1 in 4 pregnancies end in miscarriage). You also need to know exactly how far along you are to know what options are available to you. You can contact us today at 508-438-0144 to book a pregnancy confirmation appointment or contact a pregnancy center in your area.
 [Considine, Douglas (ed.). Van Nostrand’s Scientific Encyclopedia. 5th edition. New York: Van Nostrand Reinhold Company, 1976, p. 943]
 https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/prenatal-care/art-20045302#:~:text=Just%20four%20weeks%20after%20conception,the%20eyes%20and%20ears%20developr area.