I had intercourse 11 days ago on a Sunday. On the next Saturday, I had a light spotting and my cramps started. I still have not had my period, I am nausiated on and off, I have headaches on and off, and constipation and my right (smaller breast) is sore. I would assume that it was early pregnancy, However, I have been wanting a baby and my friend at work just told us she was pregnant. What are the chances that this is just a phantom pregnancy?