Only rectal, oral and vaginal measurements can be recommended. Rectal measurements are the least, oral measurements the most affected by disturbance factors.

Please do not measure your temperature on your skin or in your ear. These places are not reliable enough to be used to determine your fertile days indianpharmall.com.

You can use mechanical or digital thermometers. What is important is that it displays 2 digits after the decimal point.

Please note that temperature values of different thermometers cannot be compared indianpharmall.com. For this reason, you should only change your thermometer at the beginning of a new cycle and not in the middle of it.

Please change your thermometer every year! It becomes less reliable after that point in time.