The pre-ovulatory period is a critical period in a woman's menstrual cycle, also known as the "danger period" or "fertile period." During this stage, a woman's ovaries begin to release eggs, a physiological process that occurs once a month. If a woman has sex during this period, she may become pregnant.

During the lead-up to ovulation, women may experience a series of physical changes, such as:

1. Increased libido: During this period, women may have an increased sexual desire and may feel more excited and eager for sex.

3. Body temperature changes: During this period, a woman’s body temperature may rise, which is a physiological response of the body when she releases eggs.

However, this period is also a critical period for women's health. If you do not pay attention to protection, it may lead to a series of health problems. For example:

1. Infections: During this period, women are prone to bacterial and viral infections, such as influenza viruses and sexually transmitted diseases. If a woman doesn't take protective measures, it can lead to infection and even serious health problems.

2. Inflammation: During this period, women are susceptible to bacterial infections, which may lead to inflammation such as mastitis and metritis.

Therefore, during the pre-ovulatory period, women should take appropriate protective measures to avoid infection and inflammation. For example, you can avoid pregnancy by choosing a suitable sexual partner and using condoms or oral emergency contraceptive pills. In addition, women should also pay attention to a healthy diet, avoid excessive drinking and smoking, and maintain adequate sleep and exercise to maintain good health.