CONFUSED!?!?

So Idk why i have Egg white CM because my last period was august 22-26 my ovulation was last week supposedly. I had GLOBS of egg white cm last week. Today i start cramping sort of and i went to wipe and look more egg white CM I’m so confused. We’re not trying nor are we preventing but I didn’t track my ovulation through ovulation test, i just listened to my body and app. I took pregnancy test Sunday it showed a faint line but i wasn’t sure so i did one today and negative, i used the cheapies. Has this ever happened to anyone else ? This app is telling me my period is due October 3rd my previous app said i was due this week.