Well my lmp was on dec 4th 2003. I am very punctual with my cycle, I was suppose to start my menstual period on the 7th of january, and I missed it. I have tooken a couple of pregnancy tests and they come up negative. So yesterday I decided to get results through blood and I went down to mexico because they give you results with in a hour and the results were negative. The only symptoms I am having are that I am very sleepy and sometimes my nipples are sensative? Is it possible for the tests to come back negative and still be pregnant??????, someone please help!!! Its driving me nuts!!