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  • With Mayo Clinic obstetrician and medical editor-in-chief

    Roger W. Harms, M.D.

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Mayo Clinic Health Manager

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Question

Ovulation signs: When is conception most likely?

I'm hoping to get pregnant. How can I tell when I'm ovulating? Are there any obvious ovulation signs?

Answer

from Roger W. Harms, M.D.

Ovulation is the release of an egg from the ovary. Ovulation often happens around day 14 of the menstrual cycle, although the exact timing may vary among women or even from month to month.

Ovulation signs and symptoms are often subtle. Just before ovulation, you might notice an increase in clear, slippery vaginal secretions — if you look for it. These secretions typically resemble raw egg whites. After ovulation, when the odds of becoming pregnant are slim, the discharge will become cloudy and sticky or disappear entirely.

Your basal body temperature — which increases slightly during ovulation — may provide another clue about ovulation. Using a digital thermometer or a thermometer specifically designed to measure basal body temperature, take your temperature every morning before you get out of bed. Plot the readings on graph paper and look for a pattern to emerge. You'll be most fertile during the two to three days before your temperature rises.

For some women, ovulation triggers mild abdominal cramps.

In addition to watching for ovulation signs and symptoms, you might want to try an over-the-counter ovulation kit. These kits test your urine for the surge in hormones that takes place before ovulation.

To maximize your fertility, have sex once a day around the time of ovulation. Daily intercourse during the days leading up to ovulation may increase the odds of conception.

Next question
Baby's sex: Can parents choose?
References
  1. Trying to conceive. The National Women's Health Information Center. http://www.4woman.gov/pregnancy/tryingtogetpregnant/tryingtoconceive.cfm. Accessed Oct. 15, 2008.
  2. Stanford JB, et al. Timing intercourse to achieve pregnancy: Current evidence. Obstetrics & Gynecology. 2002;100:1333.
  3. Welt CK. Evaluation of the menstrual cycle and timing of ovulation. http://www.uptodate.com/home/index.html. Accessed Oct. 15, 2008.
  4. Natural family planning. American College of Obstetricians and Gynecologists. http://www.acog.org/publications/patient_education/bp024.cfm. Accessed Oct. 15, 2008.

AN01521

Jan. 30, 2009

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