There is nothing you can do to determine your cycle starting cause you're most likely in pre-menopause. You're best to consult a gynecologist.
Hi, I'm 43 yrs old. I get irregular periods. Got my last cycle on Nov 10th. The Dec one I didn't get. Now, I have planned a holiday on Jan 10th. Could you please tell me when should I start my Deviry and continue for how long? My holiday will last for 7 days?