Hello. I might be pregnant. My symptoms are dizziness, late period (3 days), frequent headaches, nausea but no vomiting, cramping in lower stomach, sleepy all the time, changes in appetite, irritability, increase in cervical mucus. I have no energy what so ever. My lmp was June 25, 2010. Currently, the days before in between the cycles are 29 instead of 28. My cervical mucus was white but now is yellow. It started to come everyday since Friday (July 23). I took a pregnancy test the day after that, Sat, June 24, and it was neg. If I am pregnant, I would be 4 weeks and 3 days today, July 27. Can you give me a percentage if I am pregnant or not pregnant?