Hi, I had the same problem and then bled for a month straight! Thanks to the book by Dr Lee i started using natural progesterone cream and gave up caffeine, and it has stopped the bleeding.I also was passing LARGE clots and changing pads very often in an hours time.Good idea to check things out with your doctor for your own peace of mind.If you don't already have the book by Jonn R Lee, M.D. "What Your Doctor May Not Tell You About Premenopause" I would highly recommend it.Good Luck