I had something similar, but it was over a year after I officially was post-menopausal, and not as heavy as you describe. I've always had lousy hormones but my G.P. sent me for a scan which showed something inconclusive so a further, more intrusive procedure was needed. It showed up a large, old fibroid (could have been the cause of some of my symptoms years before)but nothing else. Conclusion was hormones gone wonky again and 13 yrs. later I'm fine (still getting sweats etc. :( ) -but do, please, get checked out.