how to use thermometer for pregnancy test

You cant really use a thermometor to tell if you are pregnant or not...You may use a thermomertor to check your basel temp, but you must due this as soon as you get up in the mornings and get out of bed, you would write down your temp each morning for a month, then you can look at it and guess about what days you are ovulating, but if you want to test to see if you are pregnant then you would need to take a pregnancy test.....