Implantation?

This happened 6 days before period is due, and I haven’t bled since and this was all there was. I’ve barely been cramping like hardly at all.

My last period my boobs were super sensitive and this time not at all.

My periods have become pretty regular the last couple months

Not 100percent sure what day I ovulated

Is this what implantation bleeding looks like?

I tested at 6 A.M. this morning so only about 36 hours after bleeding and it was negative. I have more test and will test tomorrow.

What do you think? I really never spot. Last time it happened was 8 months ago around time I had a chemical pregnancy I believe