There are many ways to predict a woman’s ovulation period. Here are some commonly used methods:

2. Calendar method: According to a woman’s birthday and menstrual cycle, a woman’s ovulation period can be calculated. Generally speaking, a woman’s menstrual cycle lasts 28 days, so starting from the 13th day of the cycle, a woman’s ovulation period is approximately between the 16th and 21st days.

3. Observe symptoms: Some women may experience symptoms during ovulation, such as increased body temperature, increased appetite, high energy, etc. If a woman has these symptoms, she may be pregnant.

4. Use test strips: Women can use test strips to detect their ovulation period. Generally speaking, test strips can detect whether a woman's urine contains HCG value, which is a substance needed for the formation of a fertilized egg.