What is suboxone? Sorry, I am a medical assistant and am pregnant with my 12th pregnancy and I don't know what that is. I need more information. The only way to get a false negative is most likely if you tested to early. I would suggest you go see your doctor and have a blood pregnancy test done. That is the most accurate and if its negative they can discuss what might be going on. If you are under stress that can make you miss your period or for it to be late. Also, there are a few other things. Good luck.