i have just had a period, i was 1 day late, had it for 7 days, by the 5th day i started to finish, then on day 7 i had light brown discharge which i never have. i also have alot of signs of pregnancy like nausea , headaches, backpain, breats have grown and the bits round my nipples are bumpy.i did a a test but it came back negative what do i do?