Hi I am on sprintec birth control pill and I have been for almost 10 months now. I've never missed a pill and I've always taken it on time, maybe a half hour to an hour late here and there but that doesn't happen very often. I had unprotected sex and he doesn't think he ejaculated in me but wasn't sure so I took plan b 16 hours later. This happened on the 8th of January and I had a little bit of light brown discharge today. I start my placebo pills next week and my period always comes during that week. Could I be pregnant? Or am I just paranoid?