First post ever. My husband and I are NTNP, but have been very active this month, especially in my fertile window. I was supposed to get my AF 5 days ago (12/26) but nothing. I tested a day after my missed period with one brand of test and got a negative. Tested the next day with the same brand and negative again. Have been testing every morning since with the True Stick strips and have had a very clear negative every day. Any one else been in the same situation? What was the outcome? I'm usually very regular with my period so this is very confusing to me.