Progesterone is vital female hormone central to successful conception and a healthy pregnancy.  The word progesterone is itself etymologically related to the Latin root gestare – meaning to bear or carry – suggesting the importance of this hormone in creating a fertile environment for conception and the gestation of the baby.

There are two hormones produced by the ovaries during ovulation:  oestradiol and progesterone.  Together, these two hormones create conditions which assist in fertilization.  Progesterone causes the abrupt change in the mucus which occurs immediately after ovulation and defines the Peak symptom.  This makes fertilizing more likely, and allows the semen to survive longer than it would anywhere else.  Progesterone also prepares for implantation of the fertilized ovum. 

Progesterone also forestalls the shedding of the endometrium (where implantation occurs), helping to prevent miscarriage in the early weeks of pregnancy.  progesterone is also responsible for the increase in body temperature at ovulation that lasts through most of the luteal phase.

Low progesterone can be detected by a blood test after ovulation or by charting fertility. Another sign of low progesterone is a shortened luteal phase that lasts less than 10 days.  There are several things you can do to boost the progesterone level. One is to go to the doctor and get a prescription for progesterone or a fertility drug like Clomid.  There are also natural progesterone creams available that may help in preparing the uterine wall for implantation of the fertilized egg and sustain the endometrium.  Women with a history of miscarriage can use natural progesterone cream as soon as they know they have ovulated, to supplement their own progesterone.

What Part Does Progesterone Play In Ovulation?