Infections
Inflammatory processes of the reproductive system are the second most frequent cause of infertility. They are usually secondary to genital tract infections (often caused by STIs). If you have learned to chart your cervical mucus patterns you will quickly be able to recognise an abnormality and seek treatment promptly, which may prevent fertility disorders. For example, you may see a small amount of blood in your cervical mucus, or experience a continuous discharge alongside an ovulatory pattern of mucus.
Endometriosis
This is a condition where the endometrium develops and grows outside the uterus. The fallopian tubes, ovaries, urinary organs or intestinal organs may be affected. The cause of this condition is unknown, but risk factors may include early onset of menstruation, allergies, obesity and genetic predisposition.
About 30 to 40 percent of women with the condition may experience infertility because of scarring in their reproductive organs. Symptoms vary, but may include irregular and heavy menstruation, pain during sex, and pelvic pain for a few days before and during menstruation. By being familiar with your normal patterns of cervical mucus you are likely to detect this problem at an early stage because the pattern may not develop normally.
Treatment may include hormone therapy or surgery. Having the endometriosis removed via surgery may give you a "window of opportunity" if you are trying to conceive. Including 5 hours a week of aerobic exercise can reduce your risk of recurrence. Childbearing can also significantly reduce the risk of recurrence.