The hormones in our body changes during the menstrual cycle, generating different reactions in the body. LH stands for luteinizing hormone and it plays an important role during our menstrual cycle. We always have a certain amount of LH in our bodies, and a surge occurs 1-3 days before ovulation when the amount of LH increases. Therefore detecting the LH-surge means that the body is initiating an ovulation.
I got positive LH-tests but Natural Cycles did not confirm my ovulation?
What is important to remember is that positive LH-test does not confirm the ovulation, it only means that it is likely that your body will initiate ovulation soon. Sometimes LH is released but no ovulation happens. If ovulation doesn’t happen, then no progesterone is released and our temperature stays low. Without the increase in progesterone, there is nothing preventing ovulation to happen in the future.
Positive LH-tests must therefore be followed by a rise in temperature (due to progesterone being released) for Natural Cycles to confirm ovulation. So if you get positive LH-tests, it’s important to keep measuring your temperature to check that it does indeed rise some days later!
Ovulation is confirmed in the Natural Cycles app even if I only get negative LH-tests?
Natural Cycles can confirm your ovulation even if you enter negative LH-tests. This is because negative LH-tests does not mean that you will not ovulate – perhaps you have ovulation on the same day that you measured for LH! Or maybe you tested for LH after drinking a lot of fluid which made LH in your urine less concentrated.
We recommend to measure LH between 10am-8pm, and use concentrated urine (i.e. make sure you haven’t visited the bathroom or taken in a lot of fluids the 2 hours prior to testing). Read more here about measuring LH.
How does it look in the Natural Cycles app?
The Natural Cycles app will indicate when it’s time to take an LH test in both today’s, weekly and monthly prognosis. (See video below.) If you just started with Natural Cycles after quitting the pill, or if you have very irregular cycles, the app might need to get to know you a bit better before indicating which days to test for LH. This is to avoid for you to have to take a lot of LH tests in one cycle. If that happens, it’s important to keep measuring your temperature! 🙂
The Natural Cycles Team