Tracking a missed period in Glow

Hi all! I feel like I might be missing something very obvious when tracking my cycle in Glow. I came off birth control last month (now TTC) , and I should have just had my period the past four days. My Glow calendar still has the days highlighted. Should I just leave the highlight there until I get my next period since I will have no idea when my next one starts? I imagine coming off BC would cause my body to be confused.

I took two tests, both said negative for pregnancy. I got excited because my first one initially said not but later in the day switched to positive. But the one I took the following day said negative again.