Pregnancy

pregnantfirst trimesterpregnant womenpregnanciesthird trimesterchildbearingtrimestersecond trimesterfull termpregnant woman
Pregnancy, also known as gestation, is the time during which one or more offspring develops inside a woman.wikipedia
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Twin

identical twintwinsfraternal twin
A multiple pregnancy involves more than one offspring, such as with twins.
Twins are two offspring produced by the same pregnancy.

Abortion

abortionsinduced abortionabort
A pregnancy may end in a live birth, abortion, or miscarriage, though access to safe abortion care varies globally. Common causes include bleeding, infections, hypertensive diseases of pregnancy, obstructed labor, and complications associated with miscarriage, ectopic pregnancy, or elective abortion. A woman who has never been pregnant is referred to as a nulligravida. A woman who is (or has been only) pregnant for the first time is referred to as a primigravida, and a woman in subsequent pregnancies as a multigravida or as multiparous. Therefore, during a second pregnancy a woman would be described as gravida 2, para 1 and upon live delivery as gravida 2, para 2. In-progress pregnancies, abortions, miscarriages and/or stillbirths account for parity values being less than the gravida number.
Abortion is the ending of a pregnancy by removal or expulsion of an embryo or fetus before it can survive outside the uterus.

Woman

womenwomanhoodfemale
Pregnancy, also known as gestation, is the time during which one or more offspring develops inside a woman.
Typically, a woman has two X chromosomes and is capable of pregnancy and giving birth from puberty until menopause.

Childbirth

laborbirthlabour
Childbirth typically occurs around 40 weeks from the start of the last menstrual period (LMP).
Childbirth, also known as labour and delivery, is the ending of pregnancy where one or more babies leaves a woman's uterus by passing through the vagina or by Caesarean section.

Unsafe abortion

back-alley abortionunsafe abortionsunsafe
A pregnancy may end in a live birth, abortion, or miscarriage, though access to safe abortion care varies globally.
An unsafe abortion is the termination of a pregnancy by people lacking the necessary skills, or in an environment lacking minimal medical standards, or both.

Amenorrhea

amenorrhoeaprimary amenorrheasecondary amenorrhea
Symptoms of early pregnancy may include missed periods, tender breasts, nausea and vomiting, hunger, and frequent urination.
Physiological states of amenorrhoea are seen, most commonly, during pregnancy and lactation (breastfeeding), the latter also forming the basis of a form of contraception known as the lactational amenorrhoea method.

Gestational diabetes

Gestational diabetes mellitusdiabetesdiabetes in pregnancy
Complications of pregnancy may include disorders of high blood pressure, gestational diabetes, iron-deficiency anemia, and severe nausea and vomiting among others.
Gestational diabetes is a condition in which a woman without diabetes develops high blood sugar levels during pregnancy.

Folate

folic acidfolate biosynthesisone carbon pool by folate
Prenatal care may include taking extra folic acid, avoiding drugs and alcohol, regular exercise, blood tests, and regular physical examinations.
Folic acid is also used as a supplement by women during pregnancy to reduce the risk of neural tube defects (NTDs) in the baby.

Birth control

contraceptioncontraceptivecontraceptives
Among unintended pregnancies in the United States, 60% of the women used birth control to some extent during the month pregnancy occurred.
Birth control, also known as contraception and fertility control, is a method or device used to prevent pregnancy.

Obstetrical bleeding

obstetrical hemorrhageobstetric hemorrhagehemorrhage
Common causes include bleeding, infections, hypertensive diseases of pregnancy, obstructed labor, and complications associated with miscarriage, ectopic pregnancy, or elective abortion.
Obstetrical bleeding is bleeding in pregnancy that occurs before, during, or after childbirth.

Stillbirth

stillbornfetal deathstillbirths
A woman who has never been pregnant is referred to as a nulligravida. A woman who is (or has been only) pregnant for the first time is referred to as a primigravida, and a woman in subsequent pregnancies as a multigravida or as multiparous. Therefore, during a second pregnancy a woman would be described as gravida 2, para 1 and upon live delivery as gravida 2, para 2. In-progress pregnancies, abortions, miscarriages and/or stillbirths account for parity values being less than the gravida number.
Stillbirth is typically defined as fetal death at or after 20 to 28 weeks of pregnancy (depending on the source).

Signs and symptoms of pregnancy

symptoms and discomforts of pregnancymechanical discomforts of pregnancypregnancy discomfort
The usual symptoms and discomforts of pregnancy do not significantly interfere with activities of daily living or pose a health-threat to the mother or baby.
Symptoms and discomforts of pregnancy are those presentations and conditions that result from pregnancy but do not significantly interfere with activities of daily living or pose any significant threat to the health of the mother or baby, in contrast to pregnancy complications.

Uterus

wombuterineuteri
The fertilized egg then travels down the fallopian tube and attaches to the inside of the uterus, where it begins to form the embryo and placenta.
During pregnancy, the uterine glands and blood vessels in the endometrium further increase in size and number and form the decidua.

Sexual intercourse

sexcopulationintercourse
Pregnancy can occur by sexual intercourse or assisted reproductive technology.
When a fertilized ovum reaches the uterus, it becomes implanted in the lining of the uterus (the endometrium) and a pregnancy begins.

Placenta

placental barrierchorioallantoic placentaafterbirth
The fertilized egg then travels down the fallopian tube and attaches to the inside of the uterus, where it begins to form the embryo and placenta.
The placenta grows throughout pregnancy.

Gravidity and parity

gravidprimiparouspluriparous
A woman who has never been pregnant is referred to as a nulligravida. A woman who is (or has been only) pregnant for the first time is referred to as a primigravida, and a woman in subsequent pregnancies as a multigravida or as multiparous. Therefore, during a second pregnancy a woman would be described as gravida 2, para 1 and upon live delivery as gravida 2, para 2. In-progress pregnancies, abortions, miscarriages and/or stillbirths account for parity values being less than the gravida number. Gravidus and gravid come from the Latin word meaning "heavy" and a pregnant female is sometimes referred to as a gravida.

Prenatal care

antenatal careprenatalpre-natal care
Prenatal care improves pregnancy outcomes.

Gestational age

gestationgestationalweeks of gestation
The chronology of pregnancy is, unless otherwise specified, generally given as gestational age, where the starting point is the beginning of the woman's last menstrual period (LMP), or the corresponding age of the gestation as estimated by a more accurate method if available.
Gestational age is a measure of the age of a pregnancy which is taken from the beginning of the woman's last menstrual period (LMP), or the corresponding age of the gestation as estimated by a more accurate method if available.

Hyperemesis gravidarum

hyperemesisHyperemesis Graviderumsevere nausea and vomiting
Complications of pregnancy may include disorders of high blood pressure, gestational diabetes, iron-deficiency anemia, and severe nausea and vomiting among others.
Hyperemesis gravidarum tends to occur in the first trimester of pregnancy and lasts significantly longer than morning sickness.

Melasma

chloasmamask of pregnancyskin pigmentation
Melasma (also known as chloasma faciei, or the mask of pregnancy when present in pregnant women) is a tan or dark skin discoloration.

Menstrual cycle

menstrual periodmenstrualmenstruating
Pregnancy rates for sexual intercourse are highest during the menstrual cycle time from some 5 days before until 1 to 2 days after ovulation.
The menstrual cycle is the regular natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible.

Stretch marks

striaestriastretch mark
Stretch marks may also be influenced by hormonal changes associated with puberty, pregnancy, bodybuilding, or hormone replacement therapy.

Braxton Hicks contractions

false laborBraxton HicksBraxton Hicks contraction
However, they are usually felt in the second trimester or third trimester of pregnancy.

Ectopic pregnancy

ectopic pregnanciesectopictubal pregnancy
Common causes include bleeding, infections, hypertensive diseases of pregnancy, obstructed labor, and complications associated with miscarriage, ectopic pregnancy, or elective abortion.
The rate of ectopic pregnancy is about 1% and 2% that of live births in developed countries, though it may be as high as 4% among those using assisted reproductive technology.