.3°f temp drop on 6 dpo

Tiara

Is it normal to have a drop like this at only 6dpo? I feel like it’s a smidge to early to see an implantation dip, and I’m not due for af until the 1st.

It says it’s dipping below my cover line, but that’s not correct because that temp was taken on a day I didn’t sleep well and had been up on and off all night.