hi,my first day of my period was march 3,2013.. i had sex intercourse the days 12 ,13,14,16,17. Im 4 days late,and i went to the doctor to do a urine pregnancy test that came out negative. i have sore tenders and a week ago,i woke up with nausea,qent to the bathroom and threw up saliva. i feel dizzy at times, and insomnia at night and tired the whole day,due to this. am i pregnant?