yeah people have told me not to use FMU too. They say the best time to take them is between 8 Am and 8 PM or something like that. I always use second morning urine which is around 10 AM then I take another at about 2 pm, and then another around 8 pm. Most women get their surge around 2 pm or after, but some women get them in the morning too, so that's why I test in the morning as well. I have been taking them like this 3 times a day at the same time everyday and have yet to miss my surge. I hope you can catch that surge! sending lots of sticky baby dust your way!