Pregnancy Week By Week
For even more information on “Counting 40 Weeks,” first, second, and third trimesters, and more—please read our How To Calculate Your Due Date resource on our website.
Getting Things Ready
A lot is happening now, but you can’t see it with the naked eye. This is when your body is ovulating and your uterus is getting ready to possibly conceive by the thickening of the uterine wall and releasing an unfertilized egg.
Here is the big moment. This is the week where ovulation and implantation can occur. When the one single sperm meets the egg, there you have it…conception. At conception, the fetus’s eye color, hair color, gender and more have already been determined.
Right now, the fetus is actually called an embryo and some major things are happening. The embryo’s brain, spinal cord, heart, and gastrointestinal tract are all being developed.
Time to Take a Pregnancy Test
It’s now time to take a pregnancy test. Most women discover their pregnancies between weeks 4-7. Pregnancy symptoms may start to develop such as a missed period or breast tenderness. Since ovulation times are different for every woman, it’s important that you take a free, medical-grade pregnancy test and receive a free ultrasound so we can determine exactly how far along you are.
Your embryo is experiencing some major growth here. The beginning stages of the nervous system, skin, nails, hair, mammary glands, sweat glands and enamel for teeth begin to develop. Also, the foundations of the heart, lungs, skeletal system, liver and much more are being created. Even arms and legs begin to develop this week.
Your embryo’s heartbeat is steady and the eyes and ears are forming but some women begin experiencing morning sickness this week.
You may begin to experience more pregnancy symptoms by week 6. Heartburn, some slight cramping, and light bleeding are super normal this week. Your breasts may still be pretty tender and you might even notice that they make look a little bit darker than normal.
Your baby now contains every body part that an adult has but they are not fully developed. The facial features begin to become more defined, and their muscles are even able to contract.
Fetus’s Kidneys Develop
You are almost out of your first trimester at this point. Your ever-growing uterus is expanding. Your fetus is continually growing as well. Its kidneys can now secrete urine and the facial features become more recognizable.
Your fetus now has its very own fingerprints.
Second Trimester: 14-27 Weeks
You may be experiencing that “pregnancy glow” due to the increased blood volume and overactive oil glands. Your fetus’s circulatory and urinary systems are beginning to function now, along with some other body systems.
You made it halfway through your pregnancy! Yay! Typical weight gain at this point is between 8-10 lbs.
Boy Or Girl?
Right now, the uterus is about the size of a soccer ball. Your fetus’ gender should be distinguishable with ultrasound by now (or even before).
Lungs Developing and Responds to Sounds. Your fetus’s lungs are continuing to develop and it is actually able to respond to sound.
Third Trimester: 28-40 Weeks
May Experience Braxton Hicks Contractions
You may experience Braxton Hicks contractions during this time. They are completely normal and it’s your body’s way to “practice” labor. If you are not aware if you are experiencing Braxton Hicks contractions or real labor, contact your doctor.