My period is 2 weeks late this month. Hpts have all been negative, but I've had excessive saliva, nausea/mild vomiting, menstrual like cramps, and fatigue. With my 3rd pregnancy, it wasn't detected on a hpt until my second missed period. I am nursing my 1 year old, but he is in the process of weaning, so it's not nearly as often. I have had a regular period since 8 months pp.