I am 3 weeks late for my menstrual cycle. I have done a couple of pregnancy tests and they came up negative. If I am not pregnant can someone with a normal menstrual cycle hx have problems all of a sudden. I made an appt with my OB but they could not get me in any sooner than 2 months away. I feel frustrated, but I am aware of what stress can do. When you don't know what is going on how can someone not be stressed. I am 26 years old and have two children ages 3 and 9. Can anybody shed some light.:confused: