8dpo BIG + OPK?? CONFUSED

This was taken yesterday evening. It's a positive opk but I'm 9dpo today. negative opk on 3DPO on 5dpo I had a almost postive now 3 days later its a+.. I never have almost positive opk til 1-2 days before AF because of the surge so I'm confused as to why I'm still bout a week away from AF and I have a full blown POSITIVE

Also right breast has a tinder spot close to armpit