I'm on CD41.. (13 days late) but three HPT say negative. Could be age have anything to do with negative results? Hard for me to get to doctor because I do not have health insurance at this time. (Single grad student.. They don't make it easy for us to get healthcare) I have slightly sore breasts and am easily fatigued and I feel that I am way more edgy than normal!  That's about as far as symptoms go.