Whats is the maximum period can one wait to get another period? i have skipped two months, three months??

Perimenopause: Change in menstrual pattern may indicate perimenopause, a stage that may last years and involves hormonal changes. If bleeding is heavy and/or frequent, your gynecologist may suggest tests to check the status of the tissue lining the uterus. A pregnancy test should be done to rule out pregnancy. Menopause is lack of menses for one year.