Am I pregnant? I had sex during my fertile period. I haven't gotten my period since the 13th of August. My nipples are sensitive and hurt. I've been urinating more often. My lower abdomen is tighter right above my pubic bone. I'm bloated. Constipated. Dizzy. Tired. Nauseous, but haven't thrown up. And I've been getting headaches that don't last long but the pain is pretty bad and I never get headaches. And I've been getting more acne. I got a negative test that I took this morning, but it was after I had eaten and had gone to the restroom twice. I also drank at least 2 cups of water before I took the test. Am I pregnant?