How to calculate ovulation when menstruation is often delayed?

Ovulation is the time when a woman’s eggs are released from her ovaries into her fallopian tubes. This process usually occurs on day 14 of the menstrual cycle, but the exact date may vary based on individual differences. In order to determine ovulation, we need to understand a woman's menstrual cycle and ovarian cycle.

Generally, a woman's menstrual cycle lasts 28 days, but some may have it a few days earlier or later. Ovarian cycles usually last about 40 days, but the exact dates may vary based on individual differences.

Therefore, we can calculate a woman’s ovulation period by:

1. Record the menstrual cycle: Start recording the menstrual cycle on the first day of menstruation, and then record it every 2-3 days. This way we can calculate the date of our next period, and the likely length of the cycle.

2. Determine basal body temperature: Women’s basal body temperature can reflect their menstrual cycle. Start recording basal body temperature on the 14th day of the menstrual cycle, and then measure body temperature every 2-3 days. When body temperature rises by around 0.5°C, it may mean that a woman's eggs are preparing to be released.

3. Use a calendar or calculator: If you have recorded your menstrual cycle and basal body temperature, you can use a calendar or calculator to calculate a woman's ovulation period. These tools can help determine the likely date of egg release and thus help predict possible chances of pregnancy.

While frequently late periods can cause some trouble, by understanding how to calculate ovulation, we can better manage our menstrual cycles and avoid unnecessary worries and problems.