OTCL spotting?

on Ortho Tri Cyclen Lo and im 4 days(counting today) away from my sugar pills and i had some brown discharge earlier and had light cramps. this is my first month on /this/ brand, i googled and saw many women have had this but wanna get some other actual recent opinions. the old blood is back and there is some bright red blood with it although very little and i am cramping a little more. this feels like my period, everything feels normal- this is exactly how my period usually comes. i'm just still on an active BC pill with 4(counting today) days until the first sugar pill; im on pill 18.