In late November, my doctor did an estradiol test and my result was 11. My previous doctor had done one in July and it was 138. I still have very light and irregular periods. Also, have just started having frequent hot flashes in the last couple-three weeks. So far they are unpleasant but bearable. The nurse called with my results and said the doctor would discuss the results with me at my next appointment(end of January). If I do anything, I plan to take the natural route. Is it necessary to consider estrogen replacemnt when ones level is at 11. BTW, I am 48.Thanks.