Amenorrhea is diagnosed when a woman does not get her period for at least 3-6 months. Primary amenorrhea is diagnosed when a woman never had a menstrual period or bleeding and when she does not get a menstrual period by the age of 14 or 16 years of age, while secondary amenorrhea is diagnosed in a woman who previously had a regular menstrual period but then it stopped. The main reasons for primary amenorrhea are blockages or narrowing of the cervix, a hymen that has no opening, a missing uterus or vagina and a vaginal septum (a wall that divides the vagina into 2 sections). The main reasons for secondary amenorrhea is when there is no ovulation such as in pregnancy, breastfeeding, and menopause, while other causes include polycystic ovarian syndrome, obesity, being underweight, thyroid disease, reduced ovarian function, taking certain medications and other causes..

    Anovulation: Not Ovulating- An Overview

    Anovulation refers to a condition in women in which an egg is not released from the ovaries. It is the #1 cause of female infertility. ... more »

    Amenorrhea: No Menstrual Period and Not Pregnant

    If you have amenorrhea and you don't have a period and are not pregnant, then certain tests can be done to find out why you are not getting your period. ... more »

    Anovulation (No Ovulation) Causes

    Reasons for not ovulating (anovulation) inlcude polycystic ovary syndrome (PCOS), premature ovarian failure, and hypothalamic amenorrhea. ... more »

    37 years old and no period for 2 years

    Question: I am 37-years-old and have not had a period for 2 years. What could it be? Dr.Amos answers: There are several reasons why a woman does not get her period (amenorrhea). The first reason is pregnancy, in which case the pregnancy test would be positive. Or breastfeeding. If there is no pregnancy, then other reasons include: ... more »

    Anovulation - Tests to do when you are not ovulating

    The main symptoms of women who do not ovulate (anovulation) is having no period  (amenorrhea) or having irregular periods or bleeding. Here are the tests that are usually done when you are suspected of not ovulating: Laboratory Studies for Anovulation The very first test to do is a pregnancy test as pregnancy must first be excluded as a cause of not having a period. ... more »

    No Moon Flow? Seven Causes of Missed Periods Besides Pregnancy.

    If you are skipping periods and you are not pregnant, you will want to know why. Amenorrhea can be a signal of hormonal conditions that can have unhealthy effects on your body. ... more »

    The Female Athlete Triad and Infertility

    One of the signs that an exercise and diet regimen is doing more harm than good is amenorrhea (ceasing to have menstrual periods) or oligomenorrhea (having few, irregularly occurring periods). ... more »

    Premature Ovarian Failure Linked to Gene Mutation

    A team of doctors has identified a specific gene mutation that is linked to premature ovarian failure (POF), a form of early menopause that leaves a woman infertile before the age of 40. ... more »

    Prenatal Exposures and Anti-Mullerian Hormone in Female Adolescents

      A long list of studies have been published linking paternal and maternal habits prior to and during pregnancy with fetal and child health outcomes. Researchers recently published another study showing a link between pre-pregnancy habits and health to female offspring long-term health.  ... more »

    Can I Conceive While Breastfeeding?

    You can conceive while breastfeeding though you are less fertile during this time. You may notice irregular periods or a complete lack of periods, called lactation amenorrhea, for up to one year (longer for some women). ... more »

    Post Pill Amenorrhea - No Period After The Pill

    Post Pill Amenorrhea is defined when you did not get your period after stopping the pill. ... more »

    She Missed Her Period - Is She Pregnant?

    Maybe dreaded, maybe thrilled - a missed period can mean so much to a couple. If the couple has no thoughts about conceiving a child, the mention of her missed period may be a bit to digest. ... more »

    Missed Menstrual Periods And Amenorrhea

    On average, women have between 11 and 13 menstrual cycles, or periods, each year. For some women, 11 is far too many and others would love to have only 13 periods. ... more »

    How to Get Pregnant After The Pill and Other Birth Control

    It is safe to get pregnant as soon as you stop birth control, stop the pill, or have the IUD removed? Getting pregnant after birth control is not as complicated as many believe. ... more »

    Primary Amenorrhea

    Primary amenorrhea is diagnosed when a woman does not get her period by the age of 14 or 16 years of age. ... more »

    Anovulation - Why Some Women Don’t Ovulate

    Ovulation is necessary for getting pregnant, and some women have trouble getting pregnant because they do not ovulate (anovulation). ... more »

    Difference Between Ovulation and Anovulation

    What is anovulation? What is the difference between ovulation and anovulation? ... more »

    Amenorrhea - Missing Your Period - Pregnancy Diagnosis

    Amenorrhea is the absence of a menstrual period. Missing your regular menstrual period is for most women the very first early pregnancy sign. ... more »

    Menstrual Cycle and Menstrual Period Bleeding Abnormalities

    Menstruation is the regular shedding of the uterine lining about 14 days after ovulation if pregnancy did not happen. Your menstrual cycle begins on the first day you see bright red blood. ... more »

    Missed Menstrual Period - Am I Pregnant?

    Missing a menstrual period, especially if you always had regular menstrual periods, is a significant event for most women. You are probably now asking: "Am I pregnant because I missed my period?" ... more »

    PCOS - Polycystic Ovary Syndrome - Diagnosis and Treatment

    Polycystic Ovarian Syndrome is a health problem that can affect a woman's menstrual cycle, fertility, hormones, insulin production, heart, blood vessels, and appearance. ... more »

    When Can I Get Pregnant After Stopping the Pill?

    When can I get pregnant after stopping the pill? ... more »

    Negative Pregnancy Test and Missed No Period

    Missed period and negative pregnancy test - How likely is pregnancy if the pregnancy test is negative? ... more »

    No Periods Without Prometrium

    I have no periods without prometrium. How can I get pregnant? ... more »

    Imaginary Pregnancy - Pseudocyesis

    What is an imaginary pregnancy (pseudocyesis)? ... more »

    Obesity and Anovulation

    Can obesity cause anovulation? ... more »

    Premature Ovarian Failure

    Premature Ovarian Failure (POF) is a loss of ovarian function in younger women. POF is associated with amenorrhea, estrogen is low, and the follicle-stimulating hormone (FSH) level is elevated. ... more »

    Exercise and Late Period

    Why is my period late? ... more »

    No Periods - Not Ovulating

    If I don't have my periods does that mean I am not ovulating? ... more »

    Hypothalamic Pituitary Failure

    What is Hypothalamic Pituitary Failure? ... more »

    Progesterone (Provera) Challenge Test

    The progesterone or provera challenge test is given to women with no menstrual bleeding amenorrhea to see if they bleed or not. ... more »

    After the Pill - Bleeding Irregularly

    I stopped the pill two months ago but am bleeding irregularly. What does this mean? ... more »

    Amenorrhea: Causes

    I had no period for 2 months. What could be the cause? ... more »

    Depo Provera and No Period

    I received my last depo provera shot 6 months ago and have no period. Is that normal? ... more »

    Provera-No Bleeding

    I have no period and did not bleed even after taking Provera. What does this mean? ... more »

    Symptoms of PCOS

    What are the typical symptoms of PCOS? ... more »

    Diagnosis of PCOS

    How can you diagnose if I have PCOS? ... more »

    Late Period - Negative Pregnancy Test

    Late Period: Negative Pregnancy Test. There are two reasons for having a negative pregnancy test and having a late period: You did not ovulate anovulation or you did too early a pregnancy testing. ... more »

    When to See the Doctor After the Pill

    I haven't had my period since I stopped the pill four months ago, should I see a doctor? ... more »

    No Period After the Pill (Post-Pill Amenorrhea)

    It is called post-pill amenorrhea when you did not get your period after you have stopped taking the pill. ... more »