LH Surge and Ovulation?

The test line needs to be the same color or darker than the control line. A slight line usually always shows up which is why you need to wait untill they are the same color. I recomend testing twice a day as you get closer to ovulation. It gves you a better chance of calculating the exact moment of ovulation, because as soon as you get a positive test, you will ovulate in 24 to 36 hours. Test twice because you may peak at night and then test in the morning and get a positive but you already missed 12 hours. It is true that you don't ovulate every month and you may still get a positive test, so I would definitely still take your temp.