Perimenopause marks the time when your body begins the transition to menopause. It includes the years leading up to menopause — anywhere from two to eight years — plus the first year after your final period. There is no way to tell in advance how long it will last OR how long it will take you to go through it. It’s a natural part of aging that signals the ending of your reproductive years.
Source: U.S. Department of Health and Human Services.