I need help ladies

Crystal
OK so I really love this app but I am kinda stuck right now if my period was supposed to start on October 30th and it still has not came on how can I edit it in the app because every time I push the my period is late button it wants me to edit am I supposed to just wait until it does or what ? I don't want to get my hopes so I don't wanna say that im prego yet because sometimes I'm irregular