Progesterone deficiency: hormones and fertility
Progesterone is produced by the corpus luteum during the second half of the menstrual cycle and ensures that the endometrium thickens in preparation for embryo implantation. It also causes the basal body temperature to rise.
In the case of progesterone deficiency, this preparation is inadequate, which can lead to problems with implantation and early pregnancy.
Symptoms of progesterone deficiency
There are various signs that may indicate a progesterone deficiency:
- Short second phase of the menstrual cycle (less than 10 days)
- Spotting before your period
- Breast tenderness
- Mood swings
These symptoms may indicate low progesterone levels. If you wish to take a test, a saliva progesterone test is recommended, as it is more reliable than blood tests.
Progesterone and trying for a baby
A progesterone deficiency can affect your ability to conceive, as without sufficient progesterone, the lining of the womb is not optimally prepared. This makes it more difficult for a fertilised egg to implant.
NFP and the progesterone phase
Using the symptothermal method (NFP), you can closely monitor the length of your luteal phase (the second half of your cycle). In the ovolution app, you can see:
- When the rise in temperature occurred after ovulation
- How many days the high-temperature phase lasts (progesterone phase)
- Whether you experience spotting
This information is valuable for your consultation with your doctor or a fertility specialist.
When should you see your doctor?
If your high-temperature phase is regularly shorter than 10 days or if you frequently experience spotting before your period, speak to your gynaecologist. The data from the ovolution app provides valuable documentation for your consultation.