perimenopause

I have had irregular bleeding for 3 years now. I will be 48 in three months. Right now I am on month two of no period. Prior to that my last period lasted 25 days. Nothing heavy but still there. i have been checked every year with pap tests, ultrasounds and a d and c. They have checked my blood for menopause and said I was not there. They say I don't have cancer or anthing else abnormal. My first month of skipped period I hot flashed for the first time for about 2 weeks and now into month two of skipped periods I have not even had that. I have not been back for a pap yet this year because they are not proving nothing. This is all very discouraging. Previous two years my bleeding was 7 to 13 days long and uncontrollably haevy alot of the time, yet they kept telling me everything is normal. So now as far as I am concerned I will just let nature take its course.