I am 34, is it to young for pre menopause

I haven't had my period for nearly 60 days. It has never been this long before. My periods are irregular, as in heavier, lighter and longer and shorter. I'm very tired, moody, and nausea some times. I have had 3 preggie tests already and they all say negative. I have had under active thyroid but just had that checked about 2 months ago and was all clear. I don't think I'm preggie anymore, but I'm still not feeling normal. 34 i cant be going threw the change of life yet.......