i had intercourse with my husband on the days of my ovulation and prior to my ovulation we did it every other day up until my ovulation was over, i havent used no contraceptive for over almost two years and now i get very nauseous, my breast hurt, my veins are way more noticeable on my breast, i get backaches, i get cramps, once in a while, i urinate more often, i have outgrown my clothes, and i get headaches, i cant stand hamburgers anymor ewhich i used to love and i adored chocolate before...but it make me so nauseous somtimes i vomit... i am confused because i have taken two home pregnancy tests, one the day i was suppose to get my period and today.... but they were both negative what could be going on? ?