My last period began April 19. About a month after that, I had a minimal amount of spotting but no period. I figured I hadn't ovulated that month, due to a very stressful career change. I took a couple of pregnancy tests just to see, both were negative. After the spotting, I have had intercourse. Now, I experienced minimal spotting once about six days ago, and once this morning. I took a third pregnancy test about a week ago, also negative. Normally, my periods are very regular - like a calendar! I have been TTC for 9 months - had a m/c in January. Any thoughts?