Hi Deborah,
It is safe to take Vitex, Maca, Spirulina and Royal Jelly while taking Natural Progesterone.
You would want to take all of these supplements for your entire cycle, except for the Maca and Vitex, stop them during your period.
If you find out you are pregnant you may want to stop the herbs, ask your doctor about continuing the Progesterone and Maca during your first trimester.
Here is what Dr. Wong has to say on maca and pregnancy.
Dr Wong:
“Currently Maca is being used throughout South America to prevent miscarriage and help women carry to term. It also has shown itself to provide a further benefit of increasing the birth weight of children. The average weight of babies born in Denver is lower than of babies born at sea level and Denver is only 5000 feet high. What happens at triple that in the Andes? Nothing, because the Maca increases progesterone production and this adds valuable mass to the child. The higher the birth weight the greater the chance of survival!
If the Progesterone you are using is a medication, please ask your doctor if it will be alright to take herbs for fertility at the same time. We generally don't recommend taking fertility herbs with fertility medications, we don't know how they will react with one another.
Dalene