My last menstrual period began May 9th. I have very short cycles (like 26 days), and I was raped on May 15th. No contraceptive was used. I've been to the doctor, and they did a quantitative pregnancy test on the 7th of June and another on the 15th of June, and both were negative. My question is, if these symptoms and the others I have (dizziness, constant nausea, loss of appetite, headaches, and a few more) are not from pregnancy, what could it be? Or could I still be pregnant with these negative results?