Late period and light bleeding

CJ

Hey everyone. My last period was December 22 and eve said my period is 6 days late but technically I’m 2 if I count correctly. I am currently having light brown spotting as of yesterday. Is this my period? It’s light brown and not runny. Should I be worried for pregnancy? I’ve heard of implantation bleeding before but I take my pill regularly so I’m not sure if I could be pregnant. I don’t have any other symptoms either. Any help?