have any of you ladies used wondfo hpts and one day get a strong positive but the next day get a fainter line. I am not sure but I think I may have some faulty tests or something because I can take one and it be positive but take another one and it be so faint you can hardly see it. I have also had the stomach virus the last 2 days, could that be affecting my tests. I suffered a chemical pregnancy last month and I guess I am afraid It will happen again. I don't feel like AF is coming af was supposed to be due tomorrow and have not had any bleeding so I guess that is a good sign. this is what my tests looked like yesterday but today they are so light you can hardly see the second line