how do you guys take your temps

do you do under the arm, or orally

i am thinking about starting this way also with opks, but example im due in a week for period and my temp under arm is 35.7, although i had gotten out of bed and peed, then orally was 36.6

what is the best way, ohh im using a normal thermometer to, like a beep one that i use for under arms for kids with temps etc

any advice be great thanks so i can do it the right way