vanilla
I experience O cramp on CD19 (sharp pain on left) and CD21 (sharp pain on left, ab cramp and very wet), so I don't know which is really the O. Then FF shift my O and changed it to CD23, even more confusing for me. And also at that time I don't have the basal thermometer, just the normal thermometer. I have been taking the temp at 7.30am except for weekends can't wake up hahaha... but for the past 5 days, I have been waking up at 5-5.30am then tried to go back to sleep. So I took two temperatures, one at 5, the other at 7.30am. At first I don't know which temp to use, later saw that same timing is better, so I record the 7.30am timing.
The one you saw the dip at DPO7 is the one that I took at 5am but didnt take at 7.30am, cos was blur blur thought should take the first waking temp. So this chart also not so zhun. But I notice the difference in temp not that much for the two timing. The most is 0.1 deg.