I have extremely irregular cycles and after 2 years of trying to conceive with no luck I purchased these. I got pregnant after the 2nd month of using these tests. I started testing twice a day (first pee and after dinner) from CD 10. I kept a log of my tests, along with my temperature and any notes. The month I got pregnant I had a negative in the morning, and a positive at night. We had sex once 3 hours after the positive test, and my temperature spiked 12 hrs later. For me, I would always have a test line appear and they would get darker each day until I ovulated. I would get "positives" for three days. My first positive test day the line will be darker than the control line. Followed by two more days where the test line was the same as the control line, but not darker. I got a faint positive on the Easy @ Home pregnancy tests 6 DPO with a 2 hr hold. Positive First Reponse at 8 DPO with FMU. I'm now 9 months pregnant. Thanks to these tests my husband and I finally get the bundle of joy we tried so long for!