Aunt flow, will you show?

Today I am supposed to start! Haven't started yet. Took a test came back negative. But I drink so much water and pee all night long like I get up over 4 times at night. So then I wonder if that could cause a false neg. I have been feeling nauseous and have had sore boobs for a while plus my discharge has been crazy heavy! I guess time will tell. Till then im just stressing!