March 21, 2018 at 2:50 amHello! I have 2 very large BBT drops on my current chart. Is it common to have readings this low? I take the readings at the same time every day. The first big drop was taken on daylight savings day, so I guess it was really at 3:30 am instead of 4:30 am. But I had another large dip on CD 29, so now I’m thinking the first dip wasn’t a fluke. Any insights? Also, looking at my current chart, what is your perception on when ovulation occurred?