I just started my first Sprintec pack on the 14th of July which was the first day of my period. I typically stop having my period after 5 days, I thought the last day was the 19th cause I had stopped bleeding. But last time I had intercourse there was still blood, it was brown, but it was still blood. And there is still brown discharge today on the 22nd. Is this normal for just starting my first ever birth control?