According to what i calculated i would be 5 weeks today. As of saturday i started having a backache. My home pregnancy test said positive last thursday. I go pee alot and i am a little constipated but other than that i dont feel like i am pregnant. I threw up with my last one. My back doesnt hurt bad but i know it is there. I have no bleeding and no abdominal cramps. Could backache be from a uti? Please help! I am really scared because I had to have a D&C in april 07 because the baby passed away at eight weeks and still didnt pass at 10 weeks. But I didnt have a backache then. I have an appointment but it is not for two weeks.