i AM DUE FOR MY PERIOD IN ABOUT A WEEK, AND AM HAVING A LOT OF PREGNANCY SYMPTOMS, THROWING UP, NAUSEA, TIRED, NIPPLES SORE, URNINE LEAKS WHEN i HAVE TO GO TO THE BATHROOM BAD, HEADACHES, SHORNESS OF BREATH...BUT THE AT HOME TEST IS STILL COMING UP NEGATIVE IS THAT NORMAL?