Hi I Am 21 Years Old And Recently Married. I

Hi i am 21 years old and recently married. I had unprotected sex with my husband on July 20th which was my ovulation day and then again on the following fertile day Tuesday the 21st. Starting on Thursday the 23rd I have been getting extremly sick to my stomach, i have gas, major bloating, dyspepsia, hunger pains, headaches, constipation, hot flashes, thick white vaginal discharge, tender breats to touch on the sides fatigue and abdominal cramping. I have taken 2 pregnancy tests and they have came back negative. I am still 6 days away from when my period is due...what is going on? What should I do?