Period?

I recently started bc around 4 months ago. My dr. prescribed YAZ for me. My period has been all over the place.Before starting bc, ny period is usually an average, medium flow and the blood was red.. these past months prior to starting my bc, my period has been super light and just this color. When I wipe sometimes, I see red blood. * I also take iron pills as I have low iron.. if that’s something affecting the color?* Is this consider a period or should i be worried about something?