If your period comes on the 9th of every month, you will be ovulating within the next few days. During ovulation, your eggs will be mature and ready for fertilization, which is an important time for reproduction. However, if you're not sure when you're ovulating, here are some methods that can help you determine:

Secondly, you can determine when you are ovulating by observing your menstrual cycle. If your menstrual cycle is 28 days, you will begin ovulating on day 14. If your menstrual cycle is 30 days, you will begin ovulating on day 16.

Additionally, there are other methods you can use to determine when you are ovulating. For example, you can determine your ovulation by measuring your basal body temperature, or you can determine your ovulation by observing changes in your sexual desire.

Overall, determining your ovulation period is very important for anyone trying to get pregnant. If you're not sure when you're ovulating, you can use the methods above to determine it.