Period ....?

Erica
Hey ladies, today my period is due according to glow (all month it was Wednesday then last week glow pushed it to Thursday ) but still no sign of her, I did my log and it didn't give me a option to put late, etc.... It just says period day / cycle day 1????? How do you change that? Or should I just leave it ? Little confused. Any help would be awesome ! Thanks beauties xxoo