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  1. HRC Anonymous User
  2. Infertility Discussion
  3. Sunday, 03 March 2013
  4.  Subscribe via email
I was reading a couple of other articles on the web.

Some say that the chances of pregnancy one day after ovulation are nil, but "cannot exclude a probability of conception of up to 12% on either the seventh day before ovulation or the day after ovulation (Wilcox 1995)

The following link: http://www.cks.nhs.uk/contraception_emergency/background_information/chances_of_becoming_pregnant_after_sex

, cites an article by Tressel which says 12% on day of ovulation and 5% day after ovulation.

QUERY: IF THE EGG HAS A 24 LIFESPAN, how can there be a chance of pregnancy 24 hours after ovulation?

Your answer is appreciated. BC
Responses (3)
DrFrederick Accepted Answer Pending Moderation
Dear BC: Natural ovulation is difficult to predict using basal body temperature alone, or using a ovulation kit. If a woman is unable to concieve with these techniques, I would recommend an ultrasound and trigger with HCG injection, to maximize the chance that ovulation will occurr within 24-36 hours later. Then the egg has a 24 hour window to fertilize and sperm can be available at the appropriate time, thus maximizing the conception option. Timing is everything when you are trying to concieve.

Sincerely,
Dr. Jane Frederick
  1. more than a month ago
  2. Infertility Discussion
  3. # 1
HRC Anonymous User Accepted Answer Pending Moderation
My question relates to the timing of the fertile period to achieve conception.

Wilcox says six days leading to day of ovulation, but not day after.

Tressell includes two days after ovulation as being.

Experts say ovum survives 24 hours.

Who is right and why the inconsistencies?

BC
  1. more than a month ago
  2. Infertility Discussion
  3. # 2
DrFrederick Accepted Answer Pending Moderation
Dear BC: Ovulation occurs 24-36 hours after the LH surge, with the egg viable for the next 24 hours. The difficulty is determining exactly when ovulation is occurring naturally, as the basal body temp and ovulation predictor kits are not accurate to the hour. Some patients will ovulate 1 - 4 days after the predictor kit turns positive, which may explain the inconsistencies.

Best,
Dr. Jane Frederick
  1. more than a month ago
  2. Infertility Discussion
  3. # 3
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