In the months or years leading up to menopause (perimenopause), you might experience these signs and symptoms: 
Irregular periods
Vaginal dryness
Hot flashes
Chills
Night sweats
Sleep problems
Mood changes
Weight gain and slowed metabolism
Thinning hair and dry skin
Loss of breast fullness
 Signs and symptoms, including changes in menstruation can vary among women. Most likely, you'll experience some irregularity in your periods before they end. Skipping periods during perimenopause is common and expected. Often, menstrual periods will skip a month and return, or skip several months and then start monthly cycles again for a few months. Periods also tend to happen on shorter cycles, so they are closer together. Despite irregular periods, pregnancy is possible. If you've skipped a period but aren't sure you've started the menopausal transition, consider a pregnancy test.