Progesterone is a female sex hormone that belongs to a group of hormones called progestins. Often referred to as the ‘pregnancy hormone’, progesterone is essentially the ‘chemical messenger’ that travels through the blood and helps prepare the uterus for a potential pregnancy after ovulation, among other functions.

If you find yourself experiencing low progesterone levels, you may be experiencing a whole host of physical and emotional side effects; some of the most common being:

  • Headaches
  • Bloating
  • Hot flashes
  • Breast tenderness
  • Weight gain
  • Fatigue
  • Difficulty concentrating
  • Insomnia
  • Decreased sex drive/libido
  • Increased intensity of PMS (premenstrual syndrome) symptoms
  • Irregular periods

See also: What Causes Low Progesterone In Women?

What does progesterone do to a woman’s body?

Estrogen is arguably the most well-known female hormone but it’s lesser-known sister - progesterone, plays just as much of a crucial role in every woman’s menstrual cycle, fertility and emotional wellbeing.

Some of progesterone’s most vital roles include [1]:

  • Regulating the menstrual cycle
  • Thickening the lining of the uterus to prepare for a fertilized egg
  • Maintaining uterine lining throughout pregnancy
  • Breast development and breastfeeding
  • Regulating mood, weight, sex drive, and water-salt balance

What does low progesterone mean?

The symptoms associated with low progesterone are magnified by high levels of estrogen; this often occurs in the absence of sufficient progesterone levels.

Women with low progesterone may often experience irregular cycles and may struggle to get pregnant.

See also: Can I Get Pregnant With Low Progesterone Levels?

You can test your progesterone levels with your local doctor or from home with a simple at-home lab test.

The LetsGetChecked Progesterone Test monitors progesterone levels on Day 21 of your menstrual cycle. By examining progesterone in the blood, the test can indicate whether you’re ovulating normally. Online results will be available within 5 days and our dedicated medical team will be available every step of the way.

You should consider testing your progesterone levels at home if:

  • You are trying to get pregnant
  • You have irregular or painful periods
  • You have been diagnosed with endometriosis
  • You have been diagnosed with polycystic ovary syndrome (PCOS)
  • You are going through menopause

See also: How Do You Check Progesterone Levels From Home?


  1. You and Your Hormones. ‘Progesterone’. Online:, 2018