I love food, but recently if I eat something I will change my mind or I feel sick after eating it or sick an hour after eating. Right now the only thing that doesn't give me that feeling are crackers. Period is 29 days late, had some pink on toilet paper but nothing whenever I would use a tampon just to be safe. Took couple blue tests and it looks like there's another faint line but pink test is 100% negative. What could be causing this?