How do I take my basal body temperature with a regular thermometer?

You can use a normal thermometer, provided it measures temperature to at least one-tenth of a degree. Take your temperature at the same time every day, and from the same place. An increase in temperature could confirm that you are ovulating. You will most likely know you are pregnant when you miss a period.

You can track your basal body temperature orally at home with a standard thermometer.

A standard basal body thermometer should show one-tenth of a degree temperature. This small increments measurement is the main difference between basal body temperature and regular temperature.

You can find the BBT elevated orally at home, two to three days before the ovulation phase. This is the time when you are most fertile during the month.