How Much Does a Baby's Brain Grow in the Last Month of Pregnancy

How does pregnancy happen?

In order for pregnancy to happen, sperm needs to run 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 on sex activity for pregnancy to happen.

How do people get pregnant?

Pregnancy is really a pretty complicated process that has several steps. It 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 out every time you lot ejaculate — but it but takes one sperm cell to encounter with an egg for pregnancy to happen.

Eggs live in ovaries, and the hormones that control your menstrual bicycle cause a few eggs to mature every month. When your egg is mature, it means it'southward ready to exist fertilized by a sperm cell. These hormones likewise make the lining of your uterus thick and spongy, which gets your body set for pregnancy.

When a sperm cell joins with an egg, information technology's called fertilization. Fertilization doesn't happen right away. Since sperm can hang out in your uterus and fallopian tube for upwardly to 6 days after sex, there'due south up to 6 days betwixt sex and fertilization.

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

Implantation usually starts about 6 days later on fertilization, and takes about 3-4 days to complete. The embryo develops from cells on the inside of the ball. The placentadevelops from the cells on the outside of the ball.

When a fertilized egg implants in the uterus, information technology releases pregnancy hormones that forestall the lining of your uterus from shedding — that's why people don't go periods when they're meaning. If your egg doesn't meet up 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 torso during your period. Up to half of all fertilized eggs naturally don't implant in the uterus — they pass out of your trunk during your period.

What are early on pregnancy symptoms?

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

Common 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 pregnancy symptoms can sometimes experience like other common conditions (like PMS). And then the only way to know for sure if y'all're meaning is to have a pregnancy exam. You can either take a abode pregnancy test (the kind you buy at the drug or grocery store), or get a pregnancy test at your dr.'s office or local Planned Parenthood Health Center.

How do people get pregnant with twins?

At that place are 2 ways that twins can happen. Identical twins are made when 1 already-fertilized egg splits into two separate embryos. Because identical twins come from the aforementioned sperm and egg, they have the same genetic cloth (DNA) and look exactly akin.

Non-identical twins (also chosen "fraternal" twins), are made when two separate eggs are fertilized by two carve up sperm, and both fertilized eggs implant in the uterus. This can happen if your ovaries release more than than one egg, or during certain kinds of fertility treatments. Non-identical twins have completely different genetic fabric (Dna), and usually don't look alike. They're the most common type of twin.

What is gestational age?

The term "gestational age" basically ways how far along into a pregnancy you are. Gestational historic period is counted by starting with the beginning mean solar day of your last menstrual period (chosen LMP).

Gestational age can be kind of disruptive, since it measures pregnancy from your last period — about 3-four weeks BEFORE you're actually pregnant. Common knowledge about pregnancy says it lasts 9 months, and it's truthful that you lot're normally meaning for about ix months. Simply the fashion pregnancy is measured makes it a little longer. A typical full-term pregnancy ranges from 38-42 weeks LMP — effectually 10 months.

Many people can't recollect the verbal date of their terminal menstrual menses — that'south totally okay. Your nurse or doctor tin observe out the gestational historic period using an ultrasound.

More than questions from patients:

Tin you get significant from precum?

Your chances of getting significant from precum are pretty low. But information technology is possible.

Precum (also known as pre-ejaculate) is a modest amount of fluid that comes out of the penis when you're aroused, but earlier ejaculation happens. Information technology doesn't usually have any sperm in it. Merely some people'south precum does have a pocket-size amount of sperm in information technology sometimes. This ways sperm can get into the vagina and possibly fertilize an egg.

In that location'due south no way to know who has sperm in their precum and who doesn't, so that's ane reason why the withdrawal method (pulling out) isn't the all-time at preventing pregnancy.

If yous don't want to go pregnant, put on a safety before your genitals touch your partner's. Even better, employ both condoms and another kind of birth control together.

What are the stages of pregnancy?

Pregnancy lasts about 40 weeks. The stages of pregnancy are divided into 3 trimesters. Each trimester is a little longer than 13 weeks.

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

During the commencement trimester, yous'll probably have lots of body changes, including:

• Tiredness

• Tender, swollen breasts

• Morn sickness

• Cravings or distaste for certain foods

• Mood swings

• Constipation

• Needing to pee more oft

• Headache

• Heartburn

• Weight gain or loss

Most of these symptoms get away when you get to the second trimester. This is when your abdomen gets bigger and you'll feel the fetus move. You lot may also notice:

• Body aches

• Stretch marks

• Concealment of your areolas

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

• Patches of darker skin

• Numb or tingling easily

• Itching on your abdomen, palms, and feet

• Swelling of your ankles, fingers, or confront

In the third trimester, some of the aforementioned symptoms may continue. You may also experience:

• Shortness of breath

• Needing to pee even more often

• Hemorrhoids

• Your breasts leaking a watery pre-milk chosen colostrum

• Your belly button sticking out

• Trouble sleeping

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

• Contractions

If y'all aren't certain if your symptoms are normal, call your doctor or midwife or visit your local Planned Parenthood health center.

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

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