Had my last period May 7th-May10th (baby danced May 11th, 16th and 17th) which end up being CD5, 10 and 11. Been testing ovulation since CD 8, the line looked slighty lighter than the control line as if it would have been positive a day or 2 before... everything since then have been so light theres barely even a line now on CD14 still negative. Is it possible I could have ovulated on CD7 and am now pregnant? Had severe heart burn the last 3 days and I have NEVER had heartburn in my life! My cycle last month was only 23 days.