Women who haven’t had menarche yet may not know that their ovulation period is actually the next month. While most people begin menarche after puberty, some women may need extra time to adjust. If you haven’t had your period yet, now is the time to start paying attention to your menstrual cycle and ovulation.

So, how to determine your ovulation period? Generally speaking, ovulation in women occurs between the 14th and 16th days of the menstrual cycle. However, everyone's cycle is different, so here are some ways to determine when you are ovulating:

1. Track your cycle: You can use a calendar or mobile app to track your cycle. This can help you better understand your menstrual cycle and ovulation.

2. Watch for symptoms: Some women may experience symptoms during ovulation, such as abdominal cramping, vaginal bleeding, or breast distension. If you're looking for these symptoms, you can search online for information.

3. Measure body temperature: Measuring basal body temperature can help determine your ovulation period. Upon waking each morning, take your temperature and record it on a chart. During the ovulation phase of the menstrual cycle, body temperature typically rises by 0.3 to 0.5 degrees Celsius.

While these methods can help determine when you are ovulating, they are not always accurate. Therefore, if you are unsure about your cycle and ovulation period, it is best to consult a doctor or professional consultant.

For women who haven't had menarche yet, their menstrual cycle and ovulation may be different. By recording your cycle and observing symptoms, you can better understand your body's changes and choose treatments that suit you.