I have a high fever usually at night, about 38 to 39°C, at times i felt shaking chills also, i have body malaise, back pain, a bit of dry cough and night sweat. During daytime I'm a bit ok.. I just take some ibuprofen+paracetamol. Is it pneumonia or some other else? is it serious? I felt it for almost a month already on and off.. Thank you!