I know the golden rule is to take your temperature 1st thing before you get out of bed. The past few weeks I have not been able to sleep good and I have woke up a couple of times in the night. Since I have been waking up my temperatures are staying kind of constant. I was supposed to ovulate two days ago and according to my temps I haven't but I didn't know if me waking up was affecting them. Should I take it when I wake up?