What are the different phases of post period? (peri, early, menopause, post)

There are 4 determined phases of menopause:

1. Perimenopause: 4-8 year period before menopause where you experience symptoms such as hot flashes, sleep-disturbances, night sweats, mood changes, palpitations, etc.
2. Early menopause: When certain events cause earlier menopause (mostly removal/surgery on female reproductive parts)
3. Menopause/During: When you have not had your period for about 12 months; can happen for about 4-8 years.
4. Post Menopause/After: Starts after one year has passed since your last period; you may experience symptoms from perimenopause again