I'm 8 weeks late for my period. I've been feeling nauseous a lot, my nipples are sore, I have head aches all day, I have to pee all the time, I feel crampy sometimes through the day and I also have mild craving. I'm testing this Friday and I'm afraid it'll be a negative result but if not, is this a good time to take a test? Like if I am, will the lines show up really dark?