So the last 3 to 4 weeks I’ve been nothing but nauseous, I can’t eat anything but I’m hungry, every time I eat something I instantly get nauseous and may even vomit. My mood swings are all over the place but I took a pregnancy test today but it came back negative I start my period in 2 days so could I be pregnant. And I started to discharge brown stuff yesterday but it stopped. What does this all mean!!