I had my last menstrual cycle on January 20th. I was having symptoms that could be pregnancy related and began to get a little worried when February went by and I had no period. I continued to have symptoms like headaches, nausea, back pain, etc. March went by as well, so I decided to buy a home pregnancy test. The one the I bought had two tests in it. I took one on Sunday and it was negative. I waited until the next Saturday to take the next one just in case. Negative again. I am becoming very concerned since April is flying by and still nothing.I also continue to have headaches, nausea, and stomach pain. I was wondering if anyone knew of any reason why the tests wouldn't pick up the pregnancy hormones, or if there could be another reason for my missed periods. Thanks!