One thing I know that will work, is the Dr Jonas method. There is an optimum moment every month that your body can be stimulated into a spontaneous ovulation.
My version of the story. In the late 1950's, Dr Jonas, being a brilliant astro biologist, and great at collecting information and making observations figured out that based on the exact moment of your own birth, that moon (that phase or "how full is the moon, is it only a waxing quarter tonight?" ) would influence your body for the rest of your life.
That moon will give spontaneous ovulation in women and a higher sperm count in men. And the influence of the planets (gives the boy or girl aspect, and changes every month, check your chart) can be used for good (or evil, depending on your perspective).
Dr.Jonas was nominated for the Nobel Prize for this research. You can visit his site and order and pay for the chart information and read wonderful information and testimonials. Or you could try this free charting from astro.com to get your lunar phases chart.
This is the path to follow for a free chart of your personal very fertile days.
2.all free horoscopes at a glance
3.extended chart selection
5.lunar phases fertility calendar
6.click here to show the chart
7.click anywhere on the chart to get a printable version
You now have the next twelve months of your very fertile days. You can choose to have a boy or girl as indicated on the chart by planning conception for the chosen red flagged days.
I have also found an app. It is set up for sports, and probably for betting on your favourite athlete to win. Athletes will have their best performance results on their moon day.
So you can get the free app and plug in all the birth dates for your favourite athletes, women trying to conceive, and men needing a higher count in sperm production.
In comparing the two charts, the app indicates only the large flag day, the last day of the four fertile days. I'm not much of a sports person, but I think there is a rule in every sport for when a score counts. The "ball" has to be in the "hands" (sperm in position to meet the egg) of the girl making the baby before the time expires. Maybe I said that a bit awkward. Maybe what I should say is, if you go up to bat on the fourth day, you might miss that window of opportunity. Play early, play often and win. And when you are under a bit of pressure and stress, have a massage to allow your body to function at its best.