Im 2, going on 3 days late for my period. Ive never been late before. Its been 2 and a half weeks since i had sex and on the first missed period day i took a test and it was negative. Could i still be pregnant? Or is my body being retarded? Ive been experiencing nausea, fatigue, acid reflex/heart burn, and breasts are extremely sore, itchy and sensitive. But My step mother says its too early for symptoms. This waiting game is nerve racking.