I've been taking soy isoflavones which have regulated my period for about 6 years. Last month my flow was pretty much normal, but this month I was late, bleeding heavy, experiencing nausea to the point of actually throwing up a few times, and I can barely stay awake for 12 hours. Other than bleeding and clots, I'm experiencing the same symptoms as I did when I was pregnant 2 years ago. I've read many blogs that state I couldn't possibly be pregnant and menstruating, but I'm tired of feeling this way.