Could it be Perimenopause?

I am 40 years old and haven't had a period since December 2008. I KNOW that I am not pregnant.This has happened before once and after 2 months of being absent my period came back. I also have been having night sweats for at least 6 months but can go a few weeks without them, but lately they have been happening nightly. Another problem I am having is daily diarhhea. there have been a few occasions where I am sure it was brought on by foods, but the rest of the time I get abdominal cramping to the point that it is painful and can last for hours. I do suffer from fibromyalgia, although I haven't had a flare up in months. After looking at different symptoms I am thinking it could be perimenopause, obviously I am just going on a hunch, but I would appreciate your opinion.

[Cherie762]

Your problems could be peri menopause but your other symptoms lead me to believe you are ill with something else,,the night sweats combined with cramping and diahrrea sound like you need a cbc  get to your family doctor asap. you need a professional diagnosis on this.