I have not checked my cervix in a couple days, but I did today and it feels high, firm, and closed. Is this a possible sign of pregnancy? One app said AF due yesterday the other says it's due the 5th. CM is creamy like lotion almost. I don't think I ovulated until early this week but LH started showing positive last Monday. I have been having lower back pain too so idk if it's AF showing up or early pregnancy. What do you think?