anybody have a dip this much then spike before a prego

Now I have noticed the dip before ovulation and the the temp spike but then another dip at around 5-7 dpo then another rise but the rise only changes within .5 to .7 for my previous mo ths but this one is a major spike of 1.4 degrees after the dpo Anybody have any thoughts on this

I'm not necessarily ttc this month and know cycles pretty well but we do want another baby in 2 months so I've been doing the pre prep on body but back to the story we were having some fun around Xmas and then I ovulated sooner then expected not to mention we got carried away for a little more days then we should have