Calculating ovulation is a topic that many women care about because ovulation is an important period for pregnancy. Here are some ways to calculate ovulation:

2. Calendar method: Women can calculate their ovulation period based on the days on the calendar. Mark the day of your next menstrual period on the calendar and add 14 days to determine the ovulation period.

3. Cycle method: Women can calculate their ovulation period based on the length of their menstrual cycle. For women with a general menstrual cycle of 28 days, ovulation occurs on the 14th day of the menstrual cycle.

4. David's test strip method: David's test strip is a test strip used to test whether a woman is pregnant. On the packaging of David test strips, there are instructions on how to calculate ovulation.