Help me make sense of my chart

I’m breastfeeding and haven’t (I don’t think) had my period return…on May 4 the tissue was slightly pink when I wiped. On June 6 and 7 I had like 1 drop off blood on each day…so I’m not sure I call that my period returning.

For the past month and a half my baby has been breastfeeding less, eating more solids, sleeping through the night, I’ve had acne, and crazy weird patterns of CM.

I started tracking my bbt with the Tempdrop device you wear on your upper arm overnight.

Is there any one with experience charting in the postpartum period?

It’s so frustrating not to have a period to mark the beginning and end of a cycle.

Are my temps way too low to show a return to fertility?