Before Menstruation Cervical Mucus I Have Regular Menstration,there's A Possibilities That I Ovulate 9 Days Before My Next Menstruation?

I have regular menstration,there's a possibilities that i ovulate 9 days before my next menstruation? - before menstruation cervical mucus

Bec. I feel like the day of egg white cervical mucus my next period 24.08 in October.