Thanks ladies. I've been taking it at the same time every day, but not as soon as I wake up. I'll start doing that.
You should take your temp at the same time each morning and do it before getting out of bed. Set an alarm if you have to. You have about a 30 minute window either way from the time you normally take your temp. So if you take your temp at 6 each morning, you could take it as early as 5:30 or as late as 6:30. But in order to get an accurate read, you really need to try your best to take it at the same time each morning; even on the weekends. Good luck!
when you track your bbt you have a window every morning, so say you wake up 6am one morning and then 630 the next, just note it on the day. But it is always as soon as you wake up, i usually set a alarm.