I had a period last week but it was 2 days early and only lasted 2 days. It wasn't very heavy either. I would have been almost 2 weeks pregnant then. Now I would be about 3 weeks and I took a test and it came up negative but my skin around my nipples are noticebly darker and I havent been very hungry but when I am I feel like I cant eat enough. I also have weird craving like nacho duritos and melted hershey chochlate. My sense of smell is 10000% higher and just the thought of some foods make me puke. I have this weird feeling in my stomach 24/7 and I just dont know if I took a bad test or if something else is going on with me.