OK so, I was supposed to get my period on Sept. 5th. It still has not showed. My last period was Aug. 4th-8th, ovulated Aug. 17th-23th, ovulated on both sides in Aug., cramping off & on since last ovulation. I have been having nausea, hot spells, dizziness, and my boobs have been sore. Took a hpt at my docs office, it was negative so she sent me to do a blood test, it was also negative? Could I still be pregnant if the blood test was negative?