Juliana,
If you have such a table I would like to see it. Basically, from an astrological point of view, the Moon plays a key role in the sex of a child - it depends according to one method whether the Moon is in a male sign (Aries, Gemini, etc) or female sign (Taurus, Cancer, etc). According to another method, it depends on the Hindu lunar mansion (there are 28 of them) the Moon is in. I have a Chinese table that purports to do the same, which is based on age and the month, but I am skeptical (and it would take me a good while to find it).
Thanks
Dave