Temp drop at 5 dpo 😞⁉️⁉️

I have pcos so my chart is all over the place unfortunately.

I do take my temp at the same time every morning while still lying in bed - I set an alarm just to be sure.

Anyway - my temp is falling during my TTW - 5 dpo is too early for implantation- what else could be going on?

If it were ectopic would I still get an implantation dip?