Ovulation Date Calculator – Forbes Health


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About 84% of couples reach pregnancy within a year of regular and unprotected sex. However, how long it takes to get pregnant varies greatly between couples, based on factors ranging from age to general health. However, knowing which days of your menstrual cycle you are most fertile can increase your chances.

Getting pregnant can be stressful, but some of that stress can be relieved by tracking your cycle and calculating your ovulation. The Forbes Health Ovulation Calculator below can help you estimate which days of your cycle could lead to pregnancy.

How to calculate ovulation with our calculator

Enter the first day of your last period and your cycle’s typical length. Our calculator will then provide your expected ovulation date and the range of days when you are most fertile.

Note: Many people have variable cycle lengths that change from month to month. Experts recommend assessing your average cycle length over the course of three months before calculating your fertile window.

What is ovulation?

Ovulation is when an adult ovum moves through the fallopian tube to be fertilized by sperm. The uterine lining thickens during the preovulatory phase in anticipation of a possible pregnancy, which prepares the uterus for a fertilized egg.

Ovulation occurs at the end of the follicular phase, which begins on the first day of your menstrual period and ends with ovulation. If the egg is not fertilized, the uterine lining is shaken during the part of the cycle known as menstruation.

When do you ovulate?

Most people ovulate anywhere between day 10 and 17 of their cycle, which is counted from the first day of your last menstrual period. However, ovulation dates can vary from one cycle to the next, and ovulation can even occur even in the absence of a menstrual period. If you are monitoring your cycle and using an ovulation computer, you can give a clear understanding of your ovulation schedule when trying to conceive.

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Ovulation Symptoms

Signs and symptoms of ovulation may vary from person to person, and some may not experience any symptoms. The primary signs used to predict ovulation include:

  • Changes in cervical fluid
  • Changes in basal body temperature
  • Changes in cervical position or firmness

Some people also experience secondary symptoms of ovulation, including:

  • Cramps or pain on one side of the lower abdomen
  • Soft breasts
  • Inflate
  • Light stains
  • Increased sex drive
  • Increased senses of smell, taste or vision

How to get pregnant

Regular sex on your fertile days, which includes five days before and the day of ovulation, can increase the chances of getting pregnant in a given month.

If you are trying to conceive, the American College of Obstetricians and Gynecologists (ACOG) recommends having sex on your fertile days, preferably every day or every other day. Maintaining a healthy weight can also help increase the chances of pregnancy, as being overweight or underweight can increase the risk of complications.

Use our ovulation tracker in conjunction with detecting your own symptoms to determine which days of your cycle you are fertile. Consider tracking and mapping your basal body temperature and also monitoring changes in your cervical mucus, for added accuracy. To increase the chances of pregnancy, avoid alcohol, smoking and consider limiting caffeine.

For additional information and help, discuss your pregnancy plans with your healthcare provider so that they can assess any current medications you are taking that may interfere with fertility. Your doctor may also advise you on other lifestyle changes that may improve your chances of getting pregnant.

(Note: Product details and prices are accurate from the date of publication.)

Frequently Asked Questions (Frequently Asked Questions)

What is ovulation day?

Ovulation day is the day your ovary releases an egg for its journey down the fallopian tube to possibly be fertilized by sperm.

How long does ovulation last?

An egg lives up to 24 hours after it leaves the ovary. If fertilization does not occur after the egg is released, dissolve the egg.

How many days after ovulation can you get pregnant?

Your fertile days are the five days before your ovulation day and your ovulation day itself. You can not get pregnant once ovulation is over and your ovum has dissolved.

How does ovulation feel?

For some people, ovulation comes with no feelings or symptoms, while others may experience mild cramps on one side of the lower abdomen. These cramps are known as mittelschmerz, or, “middle pain.”

How long does it take to get pregnant after sex?

Implantation of a fertilized egg takes place approximately six to 10 days after ovulation.

What are the chances of getting pregnant?

The chances of getting pregnant every month decrease with age. Healthy couples in their 20s and early 30s have up to a 30% chance of getting pregnant in a single menstrual cycle, according to ACOG. By age 40, that number drops to less than 10%.

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