Implantation bleeding?

I was on birth control for about a year. I got off of it around Feb 16. We have had unprotected sex many times in the time between getting off of BC until now (April 3). During this time as well I have not had any bleeding. Not even slight bleeding when ending the BC. I tested about 2-3 weeks ago for pregnancy. It was negative. Also went to the doctor to see if I was still ovulating since there had been no bleeding. Which I still am. Today I started seeing some spotting. Nothing much at all.

So my question is if this may be a period or if it’s Implantation bleeding. Do you ladies have any thoughts or just knowledge in general about implantation?

Posting anonymously for family to not see