Odds of false negative?

Elizabeth
I got off the pill a little over a month ago. My period is now 3 days late. I just took a pregnancy test, Forst response 6 days sooner (the pink one with the curved handle). SO and I use pullout method and typically have intercourse 5-7 times a week. He is very reliable with his timing and ability to pull out. What are the odds the pregnancy test was wrong? I'm so disappointed I really thought I was carrying a little one...