This might be a dumb question but...

Rhiannon 👸🏻
Does anyone know if implantation dates can change from pregnancy to pregnancy? Like let's say you have IB at 8 dpo one pregnancy can it come at maybe 10dpo the next one? I don't know I'm grasping at straws here. With my youngest I tested positive at 12dpo. I'm 12dpo today and got a bfn