This is a sensitive subject and this episod is not medical advice. Many couples are trying to get pregnant and the technique described here is one that astrologers have used for ages. However, it does not guarantee the desired result. Consult your licensed medical professionals regarding infertility. 

This technique measures the distance between the Sun and Moon in your natal birth chart. When the moon is that number of degrees, plus or minus one day, fertility is possible. 

If you would like a professional astrologer to review your chart, you can contact Thomas Miller via funastrology.com - the chat bot in the lower right - for a consultation.