why is my temp dipping is that a bad thing ???

Roslyn • Currently mummy to 3 beautiful girls currently ttc rainbow baby 👶🏻🌈🌈🌈👶🏻 x after 9 months of ttc our rainbow 🌈 baby is cooking away nicely due April 9 th god is great ❤❤❤
Why is my chart dipping is that a bad thing af due 6 th of June any advice would be appreciate thanks