I have been on the pill for 8 years and have never experienced spotting. The pill I am on and have been on for the last three years is orthocept. Recently I have experienced dark brown spotting on and off in different flow levels for the past three weeks. Along with this I have had cramping nausea blotting dizzy spells and fatigue when I took a test it told me not pregnant. Is there a chance I am and the test is wrong?