Tricky BBT charting

Ashlyn • Wife, Hospice Marketer, Step mom, and MBA recipient at ULL GEAUX CAJUNS!! TTC for 9 months.

So my BBT chart looks almost identical to last months. I detect ovulation at 17DPO. I am getting a large dip at 12DPO, but then I estimate and increase at 13DPO. I am tired the instant I wake up, and very emotional. Does anyone experience a increase in BBT ***around day 13.... I know implantation is supposed to be 6-10 etc. am I having a miscarriage and don’t know. 😩