i took a CB digital the day my period was due using first morning urine, it came up PREGNANT 3+!! i took a first response at 12pm and another one at 4pm the same day that we're both negatives. this morning (following day) i took another CB digital that showed NOT PREGNANT and i am spotting brown when i wipe.. anybody have any comments or help??:/ also feeling very light cramping for the past week or so