How does this happen?? So confused!!🤔🤔

So I’m really hoping someone can help make this make sense! (Sorry for the TMI mucus pic - 2nd pic)

Started my day June 16 off like this- AM before anything today:

- Cervical mucus June 16 AM (and tested again June 16 PM)

- Low LH tests June 16 AM & AFTERNOON

To now this.......

- Peak LH test June 16 EVENING

Which is now making all of my calendars look like this when I entered the info - O showing tomorrow!!

ALL THIS IN ONE DAY!!

Is that even possible? Has this happened to anyone before? If yes, please share!

PLEASE HELP/EXPLAIN! TIA!