2 day implantation dip?

Cat
I have a 10 month old, and I was charting my first post partum cycle.  I had an implantation dip when I conceived her.... 
I've never seen a two day implantation dip,  any input?  I know I'll just have to wait it out, but we weren't supposed to be TTC,  hubby just can't listen when I tell him no swimmers 😅
Pic of cutie just cause