Ok. I have been taking pregnancy tests for the past three weeks. All have come back negative. But I have been nauseous, throwing up, super hot, cramping, and super tired. I week to the emergency room a week ago and they did a urine sample that came back negative but said I had a uti. I take meds almost daily for an illness and I think they have given me a yeast infection. I'm almost sure that I have one. The only thing is I have only gotten them when I was pregnant. It has been 40 days since the start of my last period. This happened to anyone else??