What Happens at Conception?
Signs and Symptoms of Conception
(Human Baby)

Discover what happens at conception, here. Learn what the first signs and symptoms of conception are. Getting pregnant is a wonderful and wondrous thing. Explore the magic of conceiving a human baby.


What Happens Before Conception:

During the follicular phase of your ovulation menstrual cycle, many things come together to produce a mature egg to be fertilized. Several hormones rise and fall that signal your body to prepare for ovulation and conception. See "What Is Ovulation?" for more info on what happens before Conception.

What Happens at Conception:

Once the egg/ovum has burst from the ovarian wall it is swept into the fallopian tube. This is where conception takes place. The egg must be fertilized within 24 hours.

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Conception: Sperm and Egg

Many sperm will swim up the cervix and through the uterus and into the fallopian tube to wait for an egg. Millions of sperm are ejaculated into the vagina. But only about a few hundred are viable enough to make it to the tube to await the egg. Once there, little by little, sperm will begin to die off. Leaving the best, most viable sperm for human egg fertilization to take place.

Because the egg begins to degenerate almost immediately, completely nonviable at about 24 hours, it is best that sperm are waiting in the fallopian tube when the egg is released. Sperm can live inside the body up to 5 days at most.

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The sperm are drawn to the egg by the outer layer. Only one will make it through the wall of the egg in order to fertilize it to begin the process of building a new life.

Just when one enters the wall, the outer layer or coating will change to protect and prevent any other sperm from being able to penetrate the wall of the egg. This is the beginning of what happens at conception.

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Then, the cells of the fertilized egg (embryo) begin to multiply and develop. It takes about one week (4 to 10 days) for the embryo to reach the uterus.

At first, the cells will divide into two groups. One group forming the placenta and umbilical cord. The other will form what will be your baby.

The second mass of cells begin to divide into three groups. the ectoderm (outer layer) develops into the skin, nervous system (brain), and senses. The mesoderm (middle layer) will form the skeleton, muscles, circulatory system (heart), and reproductive organs. The endoderm (inner layer) will form the gastrointestinal and respiratory tract.

By the end of the first week, the single-cell zygote has been transformed into millions of cells (embryo) in a body that can already been seen without a microscope.

What happens After Conception:

During the luteal phase of your cycle. As the cells are multiplying and dividing, the blastocyst (multi-celled stage) continues to move down the tube and into the uterus for implantation for a successful conception and you are officially pregnant.

The embryo will then find a good spot to implant into the endometrium, lining of the uterus. Burrowing down and getting nourishment from the blood supply from the endometrial lining.

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Once implanted, conception is considered successful. The embryo emits a hormone called human chorionic gonadotropin (hCG), the pregnancy hormone. This hormone signals your reproductive system to continue to prepare your body to sustain your pregnancy. And is the hormone that is detected by pregnancy tests.

First Signs and Symptoms of Conception:

The very first sign of what happens at conception may be a short, stabbing pain in your belly where your uterus is. This is from the embryo implanting into the lining. This implantation may also cause some slight bleeding/spotting, usually of some brown blood.

Other early signs and symptoms of conceiving are frequent urination. The embryo grows very quickly the first week and is already stretching your uterus and putting pressure on your bladder.

Another sign is your breast may get slightly bigger, firmer, and more sensitive. This is from the influx of hormones necessary for your continued pregnancy and preparing your breasts to deliver milk at delivery.

What happens at conception is an amazing thing. So complex and yet so natural.

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Question About What Happens at Conception

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What Other Visitors Have Asked

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Cervical Mucus Changes at Conception and Ovulation 
Does cervical mucus change from slimy and stretchy to milky in a day? Laura's answer: Hi, Yes, cervical mucus can change from stretchy like …

Sex During Early Conception Not rated yet
Will sex during the early stages of conception spoil the pregnancy ? Laura's answer: Hi David, I see no reason why a healthy couple should not …

Light pain in the left side of my abdomen / possible sign of conception Not rated yet
I'm having light pain in the left side of my abdomen after 14 days from the start of my period. My doctor told me that I ovulated on the 12th day after …

Is pain in uterus a conception symptom? Not rated yet
Hi I'm a 35 year old female. I don't have any children as I've been struggling for last 6 years. Last week when we had sex on day 24 of my cycle (I …

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Related pages

When Does Conception Occur? | When Does Implantation Occur? | What is Ovulation? | When Does Ovulation Occur? | Preconception | How Long to Get Pregnant? | Endocrine Disruptors | Progesterone and Miscarriage | Low Progesterone | Progesterone Creams | Red Raspberry Leaf Tea | Increase Fertility Naturally |

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