How Do the Egg and Sperm Cells Become a Baby

How does pregnancy happen?

In order for pregnancy to happen, sperm needs to come across up with an egg. Pregnancy officially starts when a fertilized egg implants in the lining of the uterus. It takes up to 2-3 weeks later sexual practice for pregnancy to happen.

How do people go pregnant?

Pregnancy is actually a pretty complicated process that has several steps. Information technology all starts with sperm cells and an egg.

Sperm are microscopic cells that are made in testicles. Sperm mixes with other fluids to make semen (cum), which comes out of the penis during ejaculation. Millions and millions of sperm come up out every time you lot ejaculate — but it only takes 1 sperm cell to meet with an egg for pregnancy to happen.

Eggs alive in ovaries, and the hormones that command your menstrual cycle cause a few eggs to mature every calendar month. When your egg is mature, it means information technology'due south ready to be fertilized by a sperm prison cell. These hormones besides brand the lining of your uterus thick and spongy, which gets your body ready for pregnancy.

When a sperm cell joins with an egg, it's called fertilization. Fertilization doesn't happen right away. Since sperm can hang out in your uterus and fallopian tube for upwards to 6 days after sex activity, there's up to 6 days between sex and fertilization.

If a sperm cell does bring together upwards with your egg, the fertilized egg moves down the fallopian tube toward the uterus. It begins to separate into more than and more cells, forming a ball as it grows. The ball of cells (called a blastocyst) gets to the uterus almost 3–4 days later on fertilization.

Implantation usually starts almost half dozen days after fertilization, and takes about three-4 days to consummate. The embryo develops from cells on the within of the ball. The placentadevelops from the cells on the outside of the ball.

When a fertilized egg implants in the uterus, it releases pregnancy hormones that prevent the lining of your uterus from shedding — that'southward why people don't go periods when they're pregnant. If your egg doesn't meet upwardly with sperm, or a fertilized egg doesn't implant in your uterus, the thick lining of your uterus isn't needed and it leaves your body during your catamenia. Up to half of all fertilized eggs naturally don't implant in the uterus — they pass out of your body during your period.

What are early pregnancy symptoms?

Many people notice symptoms early on in their pregnancy, but others may not have any symptoms at all.

Mutual signs and symptoms of pregnancy can include:

• Missed period

• Swollen or tender breasts

• Nausea and/or vomiting

• Feeling tired

• Bloating

• Constipation

• Peeing more often than usual

Some early on pregnancy symptoms can sometimes feel like other common conditions (similar PMS). So the only way to know for sure if yous're pregnant is to take a pregnancy exam. Y'all can either accept a home pregnancy test (the kind you lot buy at the drug or grocery store), or get a pregnancy exam at your doctor's office or local Planned Parenthood Health Center.

How do people get pregnant with twins?

There are 2 ways that twins tin happen. Identical twins are made when i already-fertilized egg splits into ii divide embryos. Because identical twins come from the same sperm and egg, they have the same genetic material (Dna) and look exactly akin.

Not-identical twins (also called "fraternal" twins), are made when two separate eggs are fertilized by 2 separate sperm, and both fertilized eggs implant in the uterus. This tin can happen if your ovaries release more than one egg, or during sure kinds of fertility treatments. Non-identical twins have completely different genetic fabric (Deoxyribonucleic acid), and usually don't look alike. They're the most mutual blazon of twin.

What is gestational historic period?

The term "gestational historic period" basically means how far forth into a pregnancy you are. Gestational age is counted by starting with the beginning day of your final menstrual menses (chosen LMP).

Gestational age can be kind of confusing, since information technology measures pregnancy from your final period — about three-four weeks BEFORE you're actually significant. Mutual knowledge about pregnancy says information technology lasts ix months, and it's truthful that y'all're commonly pregnant for about 9 months. Just the mode pregnancy is measured makes it a petty longer. A typical total-term pregnancy ranges from 38-42 weeks LMP — effectually 10 months.

Many people can't recall the exact date of their terminal menstrual menstruum — that's totally okay. Your nurse or dr. can observe out the gestational age using an ultrasound.

More questions from patients:

Can you go meaning from precum?

Your chances of getting meaning from precum are pretty low. Only information technology is possible.

Precum (also known as pre-ejaculate) is a small amount of fluid that comes out of the penis when you're aroused, but earlier ejaculation happens. It doesn't unremarkably take whatever sperm in information technology. But some people'south precum does have a small amount of sperm in it sometimes. This ways sperm can get into the vagina and perchance fertilize an egg.

There'due south no fashion to know who has sperm in their precum and who doesn't, so that's one reason why the withdrawal method (pulling out) isn't the best at preventing pregnancy.

If you don't want to become meaning, put on a condom earlier your genitals touch your partner's. Fifty-fifty better, use both condoms and another kind of birth control together.

What are the stages of pregnancy?

Pregnancy lasts about forty weeks. The stages of pregnancy are divided into iii trimesters. Each trimester is a little longer than 13 weeks.

You'll get through many changes during each trimester. Some people experience lots of discomfort. Others don't feel much at all.

During the first trimester, you'll probably take lots of body changes, including:

• Tiredness

• Tender, swollen breasts

• Morning sickness

• Cravings or distaste for certain foods

• Mood swings

• Constipation

• Needing to pee more than oftentimes

• Headache

• Heartburn

• Weight gain or loss

Well-nigh of these symptoms go away when yous get to the second trimester. This is when your belly gets bigger and you'll feel the fetus move. You may also notice:

• Trunk aches

• Stretch marks

• Darkening of your areolas

• A line on your skin running from your omphalos to pubic bone

• Patches of darker skin

• Numb or tingling hands

• Itching on your abdomen, palms, and feet

• Swelling of your ankles, fingers, or face

In the third trimester, some of the same symptoms may keep. You may too feel:

• Shortness of breath

• Needing to pee fifty-fifty more than often

• Hemorrhoids

• Your breasts leaking a watery pre-milk chosen colostrum

• Your belly button sticking out

• Trouble sleeping

• The infant "dropping" or moving lower in your abdomen

• Contractions

If you aren't sure if your symptoms are normal, phone call your medico or midwife or visit your local Planned Parenthood health centre.

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Source: https://www.plannedparenthood.org/learn/pregnancy/how-pregnancy-happens

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