Period a week early??

Shelby • 21. Married to the love of my life. TTC for 3 years.
This is my chart before the start of bleeding on friday the 3rd:
(Normal chart for me, I'm always regular) 
This is my chart now that I added my bleeding on friday:
It is just super wacky.
Any cause for this?? I even confirmed O with tests on the 27th.