Period or implantation bleeding...

Jackie

Ok y'all, started bleeding a few days after my expected period. However, it's very light and I have no cramps (at least barely noticeable), and I normally get them pretty bad. Pregnancy tests are negative. It's my first month off of birth control so I can't tell if it's a light period, or something else. (Of course, I don't want it to be my period.) Anybody else experience anything like this?