So cycle days 4-19 I was leaving the thermometer in my mouth for only 1 minute before turning on, honestly probably more like 45 seconds. Then my fertility nutritionist reminded me I should leave it under my tongue for at least 3 minutes before turning it on for accuracy. So starting on cycle day 20 I started doing that. So it’s probably safe to say that my chart this month isn’t very accurate? I have a normal 28 day cycle & it doesn’t look like I’ve ovulated, but I think that’s because I wasn’t taking my BBT correctly: