It may throw your chart off... but I would still temp when you can. Try to make sure you have at least 3 hours of sleep and temp as close to the time you normally would when possible. There's usually a spot to mark the time, and some programs can "fix" your temp for you... or adjust it to what they think it would have been if you temped at the right time. I'm sure some of the other girls can explain better lol I feel like I didn't explain well, but I only temped for about 2 months so I don't really know THAT much