I am normally very regular & have been off my B.C. pills since Dec 09, had 3 normal periods then they just stopped. My last period was Feb 5 2010 for 4 days & I have had off & on spotting since then. I have taken a dozen pregnancy tests, even tried many different brands & they're all negative. My Dr. told me that I didn't need to be worried yet but if I didn't start a period soon I would have to come in & be checked & they can give me hormones to force my body into a period. Has anyone else had anything like this happen? What could be causing 2 missed periods but intermittent spotting? Any ideas would be great. Thanks! Oh I forgot to mention I have two sons & with both of them I had a positive pregnancy test very early.