Hi, I am late with my period, have been feeling light-headed and have sore breast and cramps in my lower abdomen which comes and goes. Eating a bit more than usual and tired all the time. Hubby and I have been tracking my ovulation. I have done 3 home pregnancy tests and a blood test with my doctor a week ago and all were negative. I also heard that some pregnant women could show up negative on a pregnancy test up to even 6 to 8 weeks. Just wondering what are your thoughts and how long before you got a positive pregnancy test?