Hi, I am 27 years old female. actually I am having mild fever form last 2 weeks. I am having fever once in a day usually after some work. I have also go through test named CBC and Widal which comes normal but still I am having mild fever from last 2 weeks and my heartbeat are also not normal I feel increased heart many times. But from last 2 days my hear beats are constant on high rate though I did not get it checked but still I can fell it.