It's possible. My doctor thinks I am in perimenopause or menopause, and I am only 33. Although rare, it can happen as young as 18. But you should go to the doctor and get some blood work done, especially your thyroid. I had thyroid, ANA, and all sorts of blood work done before my doctor started to suspect menopause. Like you, my mom and all her sisters had hystorectomies at young ages, so I had no idea what my family history might be. My symptoms were headaches, crying, hot flashes, being extrememly cold at night but waking in my sleep hot, mood swings, and forgetfullness, which is probably why I can't think of any more symptoms right now... :-)