Progesterone: is made in the ovaries after ovulation. This hormone prepares the uterus for a fertilized egg. If there are no eggs to be implanted then the Progesterone level drops causing a shedding of the lining of the uterus (menstrual period). Progesterone is one of the 2 main hormones (the other being estrogen) produced each month by the ovaries of menstruating women (and is produced in smaller amounts by the adrenals). .

Other functions of progesterone:

Serves as a natural antidepressant and helps to restore the normal sleep pattern.

Play several roles in cardiovascular protection.

Helps normalize blood sugar levels

Strengthens bones and stimulates bone building .

Helps use fat for energy

Improves alertness and gives more energy

Helps restore libido

Symptoms of progesterone deficiency:

hot flashes or night sweats

vaginal dryness

foggy thinking or memory loss

depression

insomnia

bone loss, aches, or pains

water retention

increased risk of breast or uterine cancer

yeast infections

hair loss especially on top of the head

In women, FSH is often requested in conjunction with other tests (such as LH, testosterone, estradiol, and progesterone) in the assessment of infertility. FSH levels are useful in the investigation of menstrual irregularities and to aid in the diagnosis of pituitary disorders or diseases involving the ovaries.