I usually start my period on the tenth, but it didn't happen at all last month. Is it possible to be pregnant but have no positive pregnancy test results? My nipples are very sensitive, but other then that there aren't any other symptoms. I am normally VERY regular. I took one pregnancy test two weeks after my missed period, and another one a few days later. Both negative. Took another one yesterday, and it turned out to be negative as well. I'm two days late for this month, but that isn't that late yet. I'll take another test in a week if I don't start. I am currently trying for a baby, so it's all very frustrating.