So I've been taking birth control for about a month now, I take it at 12 every day, I've never been late with it. I'd been spotting for a few days but it wasn't too bad so my bf and I had sex, but I started to bleed so we stopped. We tried again less than a week later when I wasn't spotting, and the same thing happens. Should I be concerned, or is this normal within the first month of birth control?