I have been on birth control for 1.5 years, I take it at the same time each day. This month though I took my pill a few hours late one day. My boyfriend never ejaculates inside of me, but I'm worried I could be pregnant. I have been feeling very nauseous the past few days and today I noticed brown discharge. I have 3 days left of my active pills. I have been very stressed the past week with exams amongst other things, so could this be the cause or am I pregnant?