What Is Implantation in Pregnancy? - Symptoms & Signs

Instructor: Kimberly Carpenter

Kimberly has an undergraduate degree in Lab Sciences and a Master's degree in Education.

This lesson will explain how implantation in pregnancy occurs. Learners will understand the symptoms of pregnancy implantation and the signs that accompany this. A short quiz will follow.

Implantation in Pregnancy

The reproductive system of a woman is complex, yet amazing at the same time. It is amazing that one single egg, fertilized by sperm, is capable of producing a newborn baby. Of course, there are many steps involved in this process, and each step must happen without difficulties, or problems can ensue.

The implantation of a fertilized egg is basically the attachment of that egg to the lining of the uterus. This occurs when the egg has completely traveled through one of the fallopian tubes and attaches itself to the uterine lining. Generally, this process will occur around 9 days after the ovulation phase, but it can vary depending on one's own body and hormones. The blastocyst is actually the next stage after the fertilized egg implants itself to the uterine lining. Of course, shortly thereafter, this blastocyst becomes an embryo and then begins to develop into a fetus capable of being carried to term by a pregnant woman.

Signs and Symptoms of Implantation

There are several symptoms you may experience during and shortly after the implantation of the fertilized egg inside of your body. The first is implantation bleeding, and this symptom does not happen to every person but is quite common. Implantation bleeding normally happens around 6-12 days after you ovulate and the egg is fertilized as well as implanted in the uterus. The most common sign of implantation bleeding is the uncomfortable feeling of small cramps inside your uterus. These cramps are much like the cramps you may get during menstruation, but are actually cramps due to the uterus preparing to nourish the baby already forming inside.

Also, implantation spotting may occur in some women. This bleeding is not a cause for alarm as long as you only have a few drops of blood throughout the day. This symptom will normally go away within a few days to a week in most women. Also, some women may experience fatigue and sore breasts right away. Breast soreness and fatigue are both due to your hormone levels increasing so the newly implanted embryo may begin growing right away. This developmental stage is a critical time. Some women will not experience these signs and symptoms in the beginning stages of pregnancy, though more than half generally do.

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