Hi I've been on BC for about 4 months now and I have had unprotected sex recently and he did not ejactulate inside me but I've never missed a pill or have taken it more than two hours late. But about 3 days before I would start my placebo pills this month I am spotting a bit of brown and really small bits of red occasionally. But I have also been dieting and exercising A LOT and have lost about 7-8 pounds in a week. Could this be why I'm spotting, or is it a chance of pregnancy ??