Lmp 6/29, sore breasts, nausea, headaches, dizziness, back pains, abd fullness and pulling feeling, extreme fatigue neg quan. could i stillbe pregnant?

Possibly pregnant: Your period should have been due on 7/27, if your periods are regular every 28 days. You don't mention using contraception. If you are pregnant, it's early -- about 3-4 weeks along. You certainly could have all of the symptoms you describe. Take a home pregnancy test; if positive, start on Prenatal vitamins and see an OB/GYN. If it's negative, see a doctor as to other causes. Good luck!