High temp spike 7 dpo

35 TTC baby number 1 for 9 months What does this mean?? I track my temp everyday. 1st day of my cycle was sept 5th , and I know I ovulated 10-14 days later because of my CM but now I'm supposed have AF October 5th but the last 3 days my temp spiked and when I added into app it threw everything off and say I'm ovulating again! What the hell?! Help what does this mean?