Title says it all. I got pregnant, so switched to "pregnant" in the Menstrual Cycle tracker. But then when I wanted to go back and see when my last period day was, so that I could tell my Dr how many weeks along I was, I couldn't. The menstrual tracker disappears when you are pregnant. Unfortunately, I had a miscarriage. I am trying to get pregnant again. So next time around, I know about this issue in advance, and will check my last period date, BEFORE I switch to "pregnant". But - this seems like a silly oversight by what I'm guessing are either male engineers, or female engineers who are not yet reproducing.