What to Expect During Perimenopause | This post is a great beginners guide to the years leading up to menopause. We've outlined everything you need to know - when does perimenopause start, early warning signs, common symptoms, effects on menstrual cycle, and so much more. If you're experiencing insomnia, weight gain, irritability, moodiness, night sweats, and/or hot flashes, you may be entering perimenopause, and this post will shed light on other signs to watch for! Shed Light, Hormone Levels, Hormonal Changes, Hot Flashes, Nerve Pain, Warning Signs, Insomnia, Beginners Guide, Weight Gain