Women in their 40s often start wondering if they're experiencing early menopause symptoms—a phase called perimenopause—associated with falling estrogen levels. Uncomfortable symptoms, such as worsening premenstrual syndrome (PMS), breast tenderness, and heavier periods often indicate the onset of perimenopause. The transition into menopause is typically accompanied by hot flashes, vaginal dryness, insomnia, and mood swings. …