TMI.... pills.

I just started my BC like two weeks ago not even. Haven't had my period yet.I am about 6 weeks PP. I just went to the b.r. bc I had some cramping. Wiped and there was a little bit of bloody discharge. Not bright red but like brownish. Eww TMI I know sorry. But I was wondering if this could be my period starting, or just some old blood. FYI haven't had any blood for like 2 1/2 - 3 weeks.
Damn mother nature! Can you even start your period just like that while on BC?? I am on kereva. Low dose b.c b/c that smurf makes me Crazy lol.

When I was on the mini pill after my first baby I got a period when I first started it and then after that didn't have any again until I quit bfing and went back the regular pill.