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1. www.womenshealth.gov › ovulation-calculatorOvulation calculator - Office on Women's Health

   www.womenshealth.gov › ovulation-calculator

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   2020年12月7日 · This ovulation calculator provides an estimate of your fertile window and is not a guarantee of pregnancy or of birth control. The calculator and information on this website are not medical advice. Talk to your doctor or nurse to plan for pregnancy and find birth control that works for you.

2. www.womenshealth.gov › pregnancy › menstrual-cycleThe menstrual cycle - Office on Women's Health

   www.womenshealth.gov › pregnancy › menstrual-cycle

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   2023年8月14日 · Day 1 starts with the first day of your period. This occurs after hormone levels drop at the end of the previous cycle, signaling blood and tissues lining the uterus (womb) to break down and shed from the body. Bleeding lasts about 5 days. Usually by Day 7, bleeding has stopped.

3. www.womenshealth.gov › menstrual-cycle › your-menstrual-cycleYour menstrual cycle and your health - Office on Women's ...

   www.womenshealth.gov › menstrual-cycle › your-menstrual-cycle

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   2021年2月22日 · Regular periods between puberty and menopause mean your body is working normally. Period problems like irregular or painful periods may be a sign of a serious health problem. Period problems may also lead to other health problems, including problems getting pregnant.

4. www.womenshealth.gov › pregnancy › you-get-pregnantTrying to conceive - Office on Women's Health

   www.womenshealth.gov › pregnancy › you-get-pregnant

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   2021年2月22日 · Home. Pregnancy. Before you get pregnant. Trying to conceive. How do you figure out when you're fertile and when you're not? Wondering if you or your partner is infertile? Read on to boost your chances of conception and get help for fertility problems. Fertility awareness: The menstrual cycle.

5. www.womenshealth.gov › menstrual-cycle › period-problemsPeriod problems - Office on Women's Health

   www.womenshealth.gov › menstrual-cycle › period-problems

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   2021年2月22日 · Period problems. Regular periods are a sign that your body is working normally. You should have regular periods unless you are pregnant, breastfeeding, postmenopausal, or have a medical condition that causes your periods to stop. Irregular, painful, or heavy periods may be signs of a serious health problem.

6. www.womenshealth.gov › menstrual-cycle › premenstrual-syndromePremenstrual dysphoric disorder (PMDD) - Office on ...

   www.womenshealth.gov › menstrual-cycle › premenstrual-syndrome

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   2021年2月22日 · Premenstrual dysphoric disorder (PMDD) is a health problem that is similar to premenstrual syndrome (PMS) but is more serious. PMDD causes severe irritability, depression, or anxiety in the week or two before your period starts. Symptoms usually go away two to three days after your period starts.

7. www.womenshealth.gov › pregnancy › youre-pregnant-now-whatStages of pregnancy - Office on Women's Health

   www.womenshealth.gov › pregnancy › youre-pregnant-now-what

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   2021年2月22日 · Home. Pregnancy. You're pregnant: Now what? Stages of pregnancy. Pregnancy lasts about 40 weeks, counting from the first day of your last normal period. trimesters. Expand All. First trimester (week 1–week 12) Second trimester (week 13–week 28) Third trimester (week 29–week 40) Your developing baby.