If you're really interested in finding this out, you should go onto a professional site. Much of what you'll get here is speculation and laymen. No offense to anyone, but when it comes to health, you probably should go to a professional. I could recommend BioInnovations, Dr. Becker. Search nutrients for fertility. If you plan to become pregnant, you need to make sure you have plenty of folic acid and vitamin D3 among other things.