so I need some help. the kit says that these have to be read within 3 to 5 minutes, and to ignore anything after 5 minutes. however, my first tests this cycle are barely there at 3 minutes and after 5 minutes. the 2 today were barely there at 3 minutes, but have gotten darker than any other test I have taken, but after the 5 min mark. so are these invalid? when u get your positive test, will the test line be darker than the control line within the time frame, or does it take longer than 5 minutes....thanks for the help!