I took the plan B pill on Feb 7 after my husband and I got a little careless. I have felt fine since then but on Fed 14 I started bleeding a little. Its a week before my normal period and its brown and not red. Its light and has already stopped. No cramps or fatigue. I have never started early nor has it ever been just 2 days or brown. Could this be just from the pill or could I be pregnant? I have had sex since taking the pill and my husband and I don't use protection. help please.