- A woman's monthly cycle is measured from the first day of her menstrual period until the first day of her next period. On average, a woman's cycle normally is between 28-32 days.
- Ovulation is calculated by starting with the first day of the cycle, which is the day the menstrual period starts. Most women ovulate anywhere between Day 11 - Day 21 of their cycle, counting from the first day of the LMP. (or 12-16 days from (prior to) the next expected period).
- Ovulation can occur at various times during a cycle, and may occur on a different day each month.
- Cervical fluid will change to a wet, slippery/stretchy substance that resembles "egg whites" just before ovulation occurs and until ovulation is over.
- A luteinizing hormone (LH) is released; referred to as your LH surge. The LH surge cause?s the egg to burst through the ovary wall within 24-36 hours and begin its journey down the fallopian tube for fertilization (2-3 days prior to ovulation ? LH surge).
- An egg lives 12-24 hours after leaving the ovary; is available to be fertilized
- Sperm can live in the body from 3-5 days
- In a woman with a regular period, conception typically occurs about 2 weeks after the first day of the last period
- About 6-12 days after conception, the embryo implants itself into the uterine wall.
Go by your days: Contrary to the belief that your most fertile day is 14 days after your period starts, it?s actually 14 days before your next period starts. If your cycle is regular, a little math could help time things. For a 30-day cycle, day 16 is your most fertile day. Similarly, if your cycle is normally 32 days, then you should go for it on day 18.Go by your mucus: It sounds about as fun as it is, but it can really help you identify when you're ovulating. When ovulation occurs, your body produces a slippery, thin substance called cervical mucus that helps to facilitate the passage of the sperm. If you examine yourself daily, you?ll notice a vaginal discharge that's transparent and thicker between your fingers, like egg white, on your most fertile days.Go by your temperature: "Your body temperature usually dips by half a degree 24 hours before you ovulate; then it goes up as you ovulate," says Pette Zarmakoupis, M.D., an ob-gyn and director of the Kentucky Center for Reproductive Medicine. But since basal body temperature can be thrown off by a lot of things, don't rely on it alone.Go buy a kit or monitor: Kits measure the level of Luteinizing Hormone (LH), one of the hormones that signal the ovaries to release an egg, in your urine. They offer 22 - 36 hour advance notice that you're going to ovulate. Even better, electronic devices, like the Clearblue Easy Fertility Monitor, track your LH and estrogen levels for a more accurate way to identify a greater number of fertile days ? up to five days in advance.Get wild more often. Having sex every other day can help you cover your bases if you're not timing your cycles accurately or you're having irregular periods. So get out there and have fun.