Pregnant or not ? Please read

I had my nexplanon for exactly 1yr & 6months, had it taken out feb 9th, began my period Feb 12th-19th

I was intimate with my bf everyday once a day during my predicted ovulation days.

I believe I had “implantation bleeding” on march 8th and 9th, I spotted both days in the morning for a few hours and stopped the rest of day, never got anything after that.

My period was due Monday I test today and I got BFN!!

What should i do ?

I’ve had 2 pregnancies already