Kathy
Don't worry. I am now 15 weeks pregnant and had the exact same symptoms. I began having menstrual type cramping around 2 weeks from conception and it lasted about 2-3 weeks. Sometimes it was quite severe. I assumed I had not gotten pregnant and that my period would begin at any time, but it never did. I took a test and it was positive. I have read comments from many women with a similar experience. From what I have heard ectopic pregnancy pains are to one side and are more severe stabbing pains, similar to appendicitis or ovulation pains (only more severe) I wouldn't worry. Make an appointment and see a doctor to begin prenatal care. And Congratulations and Good Luck!