The last time I had my period was 11/13/13 and it was normal. I have been under a lot of stress the past year and also dealing with a strong willed 3 year old. I've been on Nortrel 777 for 3 years. Last year after my husband had a work related accident i missed a period but the next month I got it. The past few months have been especially stressful. I haven't missed a pill. I may be an hour or so late taking it. When I was 4 days late I took a preg test and it was neg. I had the normal signs but nothing. This month I have had am achy back and a bit crampy but nothing else. I've been so stressed out about it I can't sleep. I should be starting tomorrow or wed. Pregnant?